情态动词和虚拟语气
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高中英语语法强化训练(情态动词和虚拟语气续)
( )1.-When can I come for the photo ?
-They _____be ready by 12:00.
A. can B. should C. might D. need
( )2-I stayed at the hotel while in New York.
-Oh, did you? You _____with Barbara.
A.could have stayed B. could stay
C. would stay D. must have stayed
( )3-Could I call you by your first name?
-Yes, you______.
A. will B. could C. may D. might
( )4.-Alice ,you feed the bird today.________?
-But I fed it yesterday.
A. did you B. will you C. didn’t you
D. don’t you
( )5.-Will you stay for lunch?
Sorry, ____.My brother is coming to see me.
A.I mustn’t B. I can’t
C.I needn’t D. I won’t
( )6.There was a lot of fun at yesterday’s party .You _____come ,but why didn’t you?
must have B. should C. need have
D. ought to have
( )7.-Are you coming to Jegg’s party?
I’m not sure .I ______go to the concert instead.
must B. would C. should D. might
( )8.I should have been there ,but I ______not find the time.
would B could C might D. should
( )9.My sister met him at the Grand Theatre yesterday afternoon ,so he _____your lecture.
couldn’t have attended
needn’t have attended
mustn’t have attended
shouldn’t have attended
( )10.How _____you say that you really understand the whole story if you have covered only part of the article?
A. can B must C. need D. may
( )11.-Did you finished your homework?
-No .We ______it ,but we spent too much time watching TV.
A. could have finished
B. must have finished
C. can’t have finished
D. shouldn’t have finished
( )12.-You must phone us when you get there.
Yes, I____.
must B have to C will D. should
( )13.Peter ____come to our party tonight ,but he isn’t sure yet.
A. must B. may C. can D. will
( )14.It’s nearly seven o’clock, Jack_______ be here at any moment.
must B. need C should D. can
( )15.-Could I borrow your bike?
Yes ,of course you _____.
might B. should C. can D. will
( )16.-Shall I tell John about it ?
-No ,you _____.I’ve told him already.
A. needn’t B. wouldn’t
C. mustn’t D. shouldn’t
( )17.John, you ____play with the knife ,you ________hurt yourself.
won’t ,can’t B. mustn’t may
C. shouldn’t must D. can’t shouldn’t
( )18.The fire spread through the hotel very quickly but everyone ____get out.
had to B would C. could D was able to
( )19.I _____up early this morning ,so I stayed in bed until 8 o’clock a.m.
needn’t have get B. didn’t need to get
C. shouldn’t have get D. can’t have get
( )20.-Shall I book a table for the dinner?
-No, you _____;the restaurant won’t be full this evening.
A. wouldn’t B mustn’t C. couldn’t
D. needn’t
( )21._____hand in his exercise book before Monday?
A. Need he to B. Does he need
C. Needs he to D. Need he
( )22.When he was there, he ______go to that coffee shop at the corner after work every day.
would B. should C. had better
might
( )23.-Must I get through the business in one
evening ?
-No ,you _______.
A. mustn’t B haven’t C. needn’t
D. don’t have to
( )24.Sir ,you____ be sitting in this waiting room .It is for women and children only.
oughtn’t to B. can’t
C. won’t D. needn’t
( )25.Let’s clean our classroom ,_______?
A. will you B. don’t we
C. shall we D. do you
( )26.He ____his lunch now ; the dining hall hasn’t opened yet.
mustn’t be having
. shouldn’t be having
C. needn’t be having
D. can’t be having
( )27.He _____me your secret .But he meant to no harm.
should have told B. ought not to told
C.would not tell D. ought not to have told
( )28.I wonder how he ______that to the teacher.
dare to say B. dare saying
C.not dare say D. dared say
( )29.-Why didn’t you buy it ?
I ___, but I didn’t have the money.
would B.would have
C.had had D. had bought
( )30.-Would you like to go to the cinema tonight?
-I wish I _____,but have study for a test.
A.had B. would C.could D. did
( )31.-Professor Li ,many students want t see you.
-_____they wait here or outside?
A. Do B. Will C. Shall D. Are
( )32.-What has happened to Tom?
I don’t know .He_____lost.
could get B. might get
C. can have got D. may have got
( )33.You _____have the book as soon as I finish it .
will B must C. can D. shall
( )34.Why did you throw the bottle out of the window? You _____somebody.
might hurt B. could have hurt
C.would hurt D. must have hurt
( )35.-Is he all right now?
Yes ,Who _______that such a serious illness could be cured?
A.had thought B. have thought
C. was thinking D. would have thought
( )36.-Why do you ask me to do the difficult work?
-Because you_______do such a thing and nobody is fit for it .
A. would B can C. should D. may
( )37.We have been away for twenty years ._______imagine how delighted we were when meeting again
must B. can C. will D. might
( )38.She _____the hospital so soon , for she has not yet recovered.
A. wouldn’t have left
B. shouldn’t haveleft C. could have left
D. nustn’t have left
( )39.-I would if I ______smoke here.
-No, you ____.Could you see the sign“No SMOKING”there?
A. can, needn’t B. shall, won’t
C. must ,can’t D.may , mustn’t
( )40.-How about going at four this afternoon?
-OK,that _______be a good time for me . where shall we meet?
A.would B could C. might D. should
( )41.-We could have walked to the station it was so near.
-Yes, A taxi _____at all necessary.
A. wasn’t B hadn’t C. wouldn’t
D. won’t be
( )42.I didn’t see your sister at the meeting .If she _____,she would have
Met my brother.
A. has come B. did come
C. come D. had come
( )43.-If he ___,he______that food.
-Luckily he was went to the hospital immediately.
A.was warned,would not take
B. had been warned, would not have taken
C. had he warned ,had not taken
D. would have been warned,had not taken
( )44.When a pencil is partly in a glass of water,it lookd as if it _______.
A.breaks B. has broken
C.were broke D.had been broken
( )45.You didn’t let me drive .If we_____in turn, you____so tired.
drove ,didn’t get
B. drove ,wouldn’t get
C. were driving ,wouldn’t get
D.had driven, wouldn’t have get.
( )46.-I_____I could buy one of those beautiful dogs.
-I’m afraid they wouldn’t _____you to keep it in the hotel.
A. hope ,allow B. hope ,let
C.wish ,let D . wish ,allow
( )47.But for the electrcity,the whole world______so rapidly.
A. did not develop
B.would not have developed
C.has not been developed
D. had not developed
( )48.It was ordered that no parking______allowed in front of the building.
A. is B be C was D would
( )49.My suggestion is that a few more people _______there to help me .
A.be sent B. have sent C.went D. should sent
( )50 It's necessary that you ___spoken English now and then.
A.might practise B must practise
C.should practise D. practiced
( )51.Without electricity, human life _____quite different today.
is B. will be C.would have been
D.would be
( )52.Everything will go on as usual as if ____happened.
A. nothing had B. anything hadn’t
C. nothing was D. anything was not
( )53 It is high time that all of you____to bed.
A. go B. will go C. must go D. went
( )54.He was sleepy, otherwise he _____the mistake .
A. wouldn’t make B.needn’t have made
C.would have made D. didn’t make
( )55.-What did the doctor say about your mother’s illness?
-He suggeste that she ___an operation at once.
A.must have B. had C. have D had had
( )56.The teacher demanded that the exam ______before election.
would be finished B. must be finished
C. be finished D.must be finishing
( )57.He is talking so much about America as if he ____there.
had been B have been C. was D.been
( )58.____your letter ,I would have written back two days ago.
A.If I received B.Should I received
C. Did I receive D. Had I received
( )59.That’s too bad ,I forget my glasses!
I ____it in my bag before I came here.
A. ought to put B. would have put
C. should put D. should have put
( )60.-What suggestion did you put forward at the meeting?
-That we _____another power station in the area.
A. will build B . will be building
C. build D. building
( )61.Although he tried he ____not make it .
A. would B. should C. might D. could
( )62.I ____not get away any sooner although I had planned to leave earlier.
should B. would C. could D. might
( )63.I got up early this moring so that I _______catch the first train.
must B. can C. may D. might
( )64._____you hear the radio from the other side of the room.
A.Can B. May C Must D. Should
( )65.A computer ___think of itself ,it must be told what to do .
A. can’t B. couldn’t C.may not D.might not
( )66.He left yesterday ,so he ____in Beijing.
A. may arrive B. may have arrived
C, must arrive D. arrives
( )67.Mr.Li_____be in Beijing because I saw him in town only a few minitues ago.
A.mustn’t B can’t C may not
D. isn’t able to
( )68.-My goodness ,I just missed train.
-That’s too bad . I am sure you____it ,if had hurried.
A.could have caught B. had caught
C. would catch D. could catch
( )69.The streets are all dry.It____during the night.
A. can’t have rained
B. nustn’t have rainde
C.couldn’t rain
D.shouln’t have rained
( )70.It______be difficult to learn Tibetan.
shall B. must C. should D. need
( )71.I don’t believe him .He ____be serious.
A.needn’t B can’t C. may not
D. mustn’t
( )72.She quickended her pace in order that she ____with others .
may catch up B. might catch up
C.could have caught D. might have caught up
( )73.There is someone knocking at the door .Who_____it be ?
can B. may C. must D. will
( )74.Where is my pen? I___it.
night lost B . would have lost
C. shoul have lost D. must have lost
( )75.The boy must be in the classroom ,___he?
mustn’t B needn’t C. hasn’t D isn’t
( )76.He is wet to the skin.It_____heavily.
must have rained B. must rain
C.must be raining D. may be raining
( )77.You _____him at the party last night ,I saw him off at the airport yesterday afternoon.
A. can’t see B. mustn’t
C. needn’t have see D. can’t have seen
( )78.The boy stood there without ____a week.
A. dare to say B. dared to say
C. dare to say D. dare say
( )79.I didn’t hear the phone.I _____asleep.
must be B. must have been
C. should be D. should have been
( )80.Why ____you always interrupt me ?
can B. will C. may D. must
( )81.You __yourself about money.
need not worry B. needn’t worry
C. need worry D. need not be worried
( )82.You ______get off the bus until it has stopped.
mustn’t B. needn’t
C.oughtn’t D. can’t
( )83.They had to catch an early bus,____they?
A hadn’t B. didn’t C.mustn’t D.needn’t
( )84.He ought ____have so even it possible.
not to B. to not C. not D.never
( )85.Since she is angry ,we____.
had better to leave her alone
should leave her alone
might as well leave her alone
must leave her alone
( )86.-Won't you tell me more about your problem?
-I ______talk about it any more.
A.would rather not B wouldn’t rather
C.would rather not D. wouldn’t rather to
( )87.____you rather sit at the back.
Won’t B. Wouldn’t C Don’t D will
( )88.This ____be a woman’s handkerchif .It____be a man’s.
A. can’t ,may B. can’t must
C.mustn’t can D.can’t can
( )89.Jhon has been sick for a long time ,so he ______pain.
A.used to B. got used to
C.became used to D.is used to
( )90.-Must I do my homework now?
-Yes, you_____.(No, you______)
A. need, mustn’t B. must ,mustn’t
C. must ,meedn’t D. need ,meedn’t
( )91.-Which would you rather have ,tea or coffee?
-__________.
A.sure, I would B. Yes,please
C. Yes, both D. Neither ,thank you
( )92.You_____go now .It’s getting late.
A. had rather B would rather
C. had better D. would better
( )93. _____your pass when you go into the office building?
Need you to show B. Do you need to show
C. Do you need showing D.Do you need show
( )94.You_____return the book now .You can keep it till next week if you like.
A mustn’t B. don’t have to
C. haven’t D. can’t
( )95 He is reading a novel but he_____a textbook.
may be reading B. ought to read
C.should be reading D.shouldn’t
( )96.____you mind passing me the vinegar?
A. Would B. Should C can D. Might
( )97.Ithinkthat you had better_______earlier.
start getting up B. to get up
C.to start to get up D.started getting up
( )98.Look,what you are done!You____more careful.
may be B. had to C.should have been
D. would be
( )99.-They have changed the proramme without notice.
-That’s a pity;_____yesterday football match.
A. I like to see B I liked seeing
C.I’d like seeing D.I’d like to have been
( )100.-Did you blame him for mistake ?
-Yes, but_____it .
A. I shouldn’t have done
B. I shouldn’t do
C. I should have done
D. I should do
参考答案：
1-5 BACBB 6-10 DDBAA 11-15 ACBCC
16-20 ABDBD 21-25 DADAC 26-30 DDDBC
31-35 CDDBD 36-40 BBBDA 41-45 ADBCD
46-50 DBBAC 51-55 DADCC 56-60 CADDC
61-65 DCDAA 66-70 BBAAB 71-75 BBADD
76-80 CDBBD 81-85 AABAC 86-90 CBBDC
91-95 DCBBC 96-100 AACDA
( )1.-When can I come for the photo ?
-They _____be ready by 12:00.
A. can B. should C. might D. need
( )2-I stayed at the hotel while in New York.
-Oh, did you? You _____with Barbara.
A.could have stayed B. could stay
C. would stay D. must have stayed
( )3-Could I call you by your first name?
-Yes, you______.
A. will B. could C. may D. might
( )4.-Alice ,you feed the bird today.________?
-But I fed it yesterday.
A. did you B. will you C. didn’t you
D. don’t you
( )5.-Will you stay for lunch?
Sorry, ____.My brother is coming to see me.
A.I mustn’t B. I can’t
C.I needn’t D. I won’t
( )6.There was a lot of fun at yesterday’s party .You _____come ,but why didn’t you?
must have B. should C. need have
D. ought to have
( )7.-Are you coming to Jegg’s party?
I’m not sure .I ______go to the concert instead.
must B. would C. should D. might
( )8.I should have been there ,but I ______not find the time.
would B could C might D. should
( )9.My sister met him at the Grand Theatre yesterday afternoon ,so he _____your lecture.
couldn’t have attended
needn’t have attended
mustn’t have attended
shouldn’t have attended
( )10.How _____you say that you really understand the whole story if you have covered only part of the article?
A. can B must C. need D. may
( )11.-Did you finished your homework?
-No .We ______it ,but we spent too much time watching TV.
A. could have finished
B. must have finished
C. can’t have finished
D. shouldn’t have finished
( )12.-You must phone us when you get there.
Yes, I____.
must B have to C will D. should
( )13.Peter ____come to our party tonight ,but he isn’t sure yet.
A. must B. may C. can D. will
( )14.It’s nearly seven o’clock, Jack_______ be here at any moment.
must B. need C should D. can
( )15.-Could I borrow your bike?
Yes ,of course you _____.
might B. should C. can D. will
( )16.-Shall I tell John about it ?
-No ,you _____.I’ve told him already.
A. needn’t B. wouldn’t
C. mustn’t D. shouldn’t
( )17.John, you ____play with the knife ,you ________hurt yourself.
won’t ,can’t B. mustn’t may
C. shouldn’t must D. can’t shouldn’t
( )18.The fire spread through the hotel very quickly but everyone ____get out.
had to B would C. could D was able to
( )19.I _____up early this morning ,so I stayed in bed until 8 o’clock a.m.
needn’t have get B. didn’t need to get
C. shouldn’t have get D. can’t have get
( )20.-Shall I book a table for the dinner?
-No, you _____;the restaurant won’t be full this evening.
A. wouldn’t B mustn’t C. couldn’t
D. needn’t
( )21._____hand in his exercise book before Monday?
A. Need he to B. Does he need
C. Needs he to D. Need he
( )22.When he was there, he ______go to that coffee shop at the corner after work every day.
would B. should C. had better
might
( )23.-Must I get through the business in one
evening ?
-No ,you _______.
A. mustn’t B haven’t C. needn’t
D. don’t have to
( )24.Sir ,you____ be sitting in this waiting room .It is for women and children only.
oughtn’t to B. can’t
C. won’t D. needn’t
( )25.Let’s clean our classroom ,_______?
A. will you B. don’t we
C. shall we D. do you
( )26.He ____his lunch now ; the dining hall hasn’t opened yet.
mustn’t be having
. shouldn’t be having
C. needn’t be having
D. can’t be having
( )27.He _____me your secret .But he meant to no harm.
should have told B. ought not to told
C.would not tell D. ought not to have told
( )28.I wonder how he ______that to the teacher.
dare to say B. dare saying
C.not dare say D. dared say
( )29.-Why didn’t you buy it ?
I ___, but I didn’t have the money.
would B.would have
C.had had D. had bought
( )30.-Would you like to go to the cinema tonight?
-I wish I _____,but have study for a test.
A.had B. would C.could D. did
( )31.-Professor Li ,many students want t see you.
-_____they wait here or outside?
A. Do B. Will C. Shall D. Are
( )32.-What has happened to Tom?
I don’t know .He_____lost.
could get B. might get
C. can have got D. may have got
( )33.You _____have the book as soon as I finish it .
will B must C. can D. shall
( )34.Why did you throw the bottle out of the window? You _____somebody.
might hurt B. could have hurt
C.would hurt D. must have hurt
( )35.-Is he all right now?
Yes ,Who _______that such a serious illness could be cured?
A.had thought B. have thought
C. was thinking D. would have thought
( )36.-Why do you ask me to do the difficult work?
-Because you_______do such a thing and nobody is fit for it .
A. would B can C. should D. may
( )37.We have been away for twenty years ._______imagine how delighted we were when meeting again
must B. can C. will D. might
( )38.She _____the hospital so soon , for she has not yet recovered.
A. wouldn’t have left
B. shouldn’t haveleft C. could have left
D. nustn’t have left
( )39.-I would if I ______smoke here.
-No, you ____.Could you see the sign“No SMOKING”there?
A. can, needn’t B. shall, won’t
C. must ,can’t D.may , mustn’t
( )40.-How about going at four this afternoon?
-OK,that _______be a good time for me . where shall we meet?
A.would B could C. might D. should
( )41.-We could have walked to the station it was so near.
-Yes, A taxi _____at all necessary.
A. wasn’t B hadn’t C. wouldn’t
D. won’t be
( )42.I didn’t see your sister at the meeting .If she _____,she would have
Met my brother.
A. has come B. did come
C. come D. had come
( )43.-If he ___,he______that food.
-Luckily he was went to the hospital immediately.
A.was warned,would not take
B. had been warned, would not have taken
C. had he warned ,had not taken
D. would have been warned,had not taken
( )44.When a pencil is partly in a glass of water,it lookd as if it _______.
A.breaks B. has broken
C.were broke D.had been broken
( )45.You didn’t let me drive .If we_____in turn, you____so tired.
drove ,didn’t get
B. drove ,wouldn’t get
C. were driving ,wouldn’t get
D.had driven, wouldn’t have get.
( )46.-I_____I could buy one of those beautiful dogs.
-I’m afraid they wouldn’t _____you to keep it in the hotel.
A. hope ,allow B. hope ,let
C.wish ,let D . wish ,allow
( )47.But for the electrcity,the whole world______so rapidly.
A. did not develop
B.would not have developed
C.has not been developed
D. had not developed
( )48.It was ordered that no parking______allowed in front of the building.
A. is B be C was D would
( )49.My suggestion is that a few more people _______there to help me .
A.be sent B. have sent C.went D. should sent
( )50 It's necessary that you ___spoken English now and then.
A.might practise B must practise
C.should practise D. practiced
( )51.Without electricity, human life _____quite different today.
is B. will be C.would have been
D.would be
( )52.Everything will go on as usual as if ____happened.
A. nothing had B. anything hadn’t
C. nothing was D. anything was not
( )53 It is high time that all of you____to bed.
A. go B. will go C. must go D. went
( )54.He was sleepy, otherwise he _____the mistake .
A. wouldn’t make B.needn’t have made
C.would have made D. didn’t make
( )55.-What did the doctor say about your mother’s illness?
-He suggeste that she ___an operation at once.
A.must have B. had C. have D had had
( )56.The teacher demanded that the exam ______before election.
would be finished B. must be finished
C. be finished D.must be finishing
( )57.He is talking so much about America as if he ____there.
had been B have been C. was D.been
( )58.____your letter ,I would have written back two days ago.
A.If I received B.Should I received
C. Did I receive D. Had I received
( )59.That’s too bad ,I forget my glasses!
I ____it in my bag before I came here.
A. ought to put B. would have put
C. should put D. should have put
( )60.-What suggestion did you put forward at the meeting?
-That we _____another power station in the area.
A. will build B . will be building
C. build D. building
( )61.Although he tried he ____not make it .
A. would B. should C. might D. could
( )62.I ____not get away any sooner although I had planned to leave earlier.
should B. would C. could D. might
( )63.I got up early this moring so that I _______catch the first train.
must B. can C. may D. might
( )64._____you hear the radio from the other side of the room.
A.Can B. May C Must D. Should
( )65.A computer ___think of itself ,it must be told what to do .
A. can’t B. couldn’t C.may not D.might not
( )66.He left yesterday ,so he ____in Beijing.
A. may arrive B. may have arrived
C, must arrive D. arrives
( )67.Mr.Li_____be in Beijing because I saw him in town only a few minitues ago.
A.mustn’t B can’t C may not
D. isn’t able to
( )68.-My goodness ,I just missed train.
-That’s too bad . I am sure you____it ,if had hurried.
A.could have caught B. had caught
C. would catch D. could catch
( )69.The streets are all dry.It____during the night.
A. can’t have rained
B. nustn’t have rainde
C.couldn’t rain
D.shouln’t have rained
( )70.It______be difficult to learn Tibetan.
shall B. must C. should D. need
( )71.I don’t believe him .He ____be serious.
A.needn’t B can’t C. may not
D. mustn’t
( )72.She quickended her pace in order that she ____with others .
may catch up B. might catch up
C.could have caught D. might have caught up
( )73.There is someone knocking at the door .Who_____it be ?
can B. may C. must D. will
( )74.Where is my pen? I___it.
night lost B . would have lost
C. shoul have lost D. must have lost
( )75.The boy must be in the classroom ,___he?
mustn’t B needn’t C. hasn’t D isn’t
( )76.He is wet to the skin.It_____heavily.
must have rained B. must rain
C.must be raining D. may be raining
( )77.You _____him at the party last night ,I saw him off at the airport yesterday afternoon.
A. can’t see B. mustn’t
C. needn’t have see D. can’t have seen
( )78.The boy stood there without ____a week.
A. dare to say B. dared to say
C. dare to say D. dare say
( )79.I didn’t hear the phone.I _____asleep.
must be B. must have been
C. should be D. should have been
( )80.Why ____you always interrupt me ?
can B. will C. may D. must
( )81.You __yourself about money.
need not worry B. needn’t worry
C. need worry D. need not be worried
( )82.You ______get off the bus until it has stopped.
mustn’t B. needn’t
C.oughtn’t D. can’t
( )83.They had to catch an early bus,____they?
A hadn’t B. didn’t C.mustn’t D.needn’t
( )84.He ought ____have so even it possible.
not to B. to not C. not D.never
( )85.Since she is angry ,we____.
had better to leave her alone
should leave her alone
might as well leave her alone
must leave her alone
( )86.-Won't you tell me more about your problem?
-I ______talk about it any more.
A.would rather not B wouldn’t rather
C.would rather not D. wouldn’t rather to
( )87.____you rather sit at the back.
Won’t B. Wouldn’t C Don’t D will
( )88.This ____be a woman’s handkerchif .It____be a man’s.
A. can’t ,may B. can’t must
C.mustn’t can D.can’t can
( )89.Jhon has been sick for a long time ,so he ______pain.
A.used to B. got used to
C.became used to D.is used to
( )90.-Must I do my homework now?
-Yes, you_____.(No, you______)
A. need, mustn’t B. must ,mustn’t
C. must ,meedn’t D. need ,meedn’t
( )91.-Which would you rather have ,tea or coffee?
-__________.
A.sure, I would B. Yes,please
C. Yes, both D. Neither ,thank you
( )92.You_____go now .It’s getting late.
A. had rather B would rather
C. had better D. would better
( )93. _____your pass when you go into the office building?
Need you to show B. Do you need to show
C. Do you need showing D.Do you need show
( )94.You_____return the book now .You can keep it till next week if you like.
A mustn’t B. don’t have to
C. haven’t D. can’t
( )95 He is reading a novel but he_____a textbook.
may be reading B. ought to read
C.should be reading D.shouldn’t
( )96.____you mind passing me the vinegar?
A. Would B. Should C can D. Might
( )97.Ithinkthat you had better_______earlier.
start getting up B. to get up
C.to start to get up D.started getting up
( )98.Look,what you are done!You____more careful.
may be B. had to C.should have been
D. would be
( )99.-They have changed the proramme without notice.
-That’s a pity;_____yesterday football match.
A. I like to see B I liked seeing
C.I’d like seeing D.I’d like to have been
( )100.-Did you blame him for mistake ?
-Yes, but_____it .
A. I shouldn’t have done
B. I shouldn’t do
C. I should have done
D. I should do
参考答案：
1-5 BACBB 6-10 DDBAA 11-15 ACBCC
16-20 ABDBD 21-25 DADAC 26-30 DDDBC
31-35 CDDBD 36-40 BBBDA 41-45 ADBCD
46-50 DBBAC 51-55 DADCC 56-60 CADDC
61-65 DCDAA 66-70 BBAAB 71-75 BBADD
76-80 CDBBD 81-85 AABAC 86-90 CBBDC
91-95 DCBBC 96-100 AACDA