练习:
--Look! The man at the gate ________ be our headmaster. He is always standing there every morning.
--No, it ________ be him. He is holding a meeting in the office now.
A. must, can’t B. must, mustn’t
C. can’t, can’t D. can’t, mustn’t
--Susan has bought a large house with a swimming pool.
--It ________ be very expensive. I never even dream about it.
A. must B. might C. can’t D. shouldn’t
Anna hasn’t come to school today. I think she ________ be ill.
A. can B. has to C. may D. should
---It must be John who is in the office.
---I’m sure it ______ be John. I saw him off at the railway station just twenty minutes ago.
A. won’t B. mustn’t C. can’t D. needn’t
The yellow coat ______ be Linda’s because nobody likes yellow except her.
A. can’t B. can C. mustn’t D. must
—How is your friend coming —I’m not sure. He _______ drive here.
A. may B. can C. must D. will
--Listen! Helen is singing in the next room.
--It ______ be Helen. She has gone to Beijing.
A. can’t B. mustn’t C. may D. should
This pair of shoes ____ belong to Jack. He likes this kind very much.
It ____ be his. It’s too large for him.
A. can; can’t B. may; needn’t C. must; mustn’t D. must; can’t
—Is Jessica giving us a speech this evening
—No, it _________ be her. She _________ to Japan.
A. mustn't; has gone B. mustn't; has been
C. can't; has gone D. can't; has been
—Excuse me, can you tell me the way to the zoo
—Sorry, I’m new here. Please ask that policeman. He ______ know.
A. can B. need C. may D. need to
—Mr. Smith must have been to your home this morning.
—No, he ______, because he didn’t know my address.
A. couldn’t B. can’t C. mustn’t D. may not
—Whose T - shirt is this
—It______ be John' s. It ‘s ______ small for him.
A. can't; much too B. can't; too much
C. mustn't; much too D. mustn't; too much
Choose the best answer.
—May I play computer games, Mom
—No, you ____________.
A. don’t B. can’t C. wouldn’t D. won’t
—Dad, must we wait until the light becomes green
—Yes, I'm afraid we______ .That's the traffic rule.
A. can B. may C. have to D. need
I see your ID card, sir We have to check your information.
A. May B. Must C. Should D. Need
Where are you going this month
We______ go to Xiamen, but we're not sure.
A. needn’t B. must C. might D. mustn't
—May I go out for a while, Mom
—No, you . You have to finish your homework first.
A. shouldn't B. needn't C. mustn't D. won't
Students in our school ________ know shouting is not allowed in the library.
A. can B. may C. must D. need
—Can I park my car in front of the building
—No, you ________.
A. won't B. can't C. needn't D. couldn't
—Shall I take my swimming suit
—No, you . We will just go hiking in the mountain.
A. mustn’t B. couldn’t C. needn’t D. can’t
Drivers ________ wear seat belts while their cars are running on the road.
A. need B. can C. must D. may
―Must I return the book this week
―No, you . You can it for 20 days.
A. mustn’t, keep B. needn’t, borrow C. needn’t, keep D. mustn’t, have
--Excuse me, whose book is this
--It ________ be John’s. It has his name on it.
A. must B. need C. can’t D. can
—Must I go to medical school and be a doctor like you, dad
—No, you _______, son. You’re free to make your own decision.
A. can’t B. mustn’t C. shouldn’t D. needn’t
The man ______be my English teacher. He has gone to Canada.
A. might B. must C. can’t D. mustn’t
A country has dreams. We teenagers ________ also have dreams. With dreams and hard work, anything amazing can be created.
A. may B. must C. should D. need
According to the new traffic law, everyone in a car _______wear the seat belt.
A. can B. may C. must D. will
—Who’s the man over there Is it Mr. Black
—It ______ be him. He’s much taller.
A. may not B. can’t C. will not D. mustn’t
You ____________ drive your car so fast. It’s very dangerous.
A. wouldn’t B. shouldn’t C. couldn’t D. mightn’t
The woman who is talking with Mr. Brown ___ be Miss Li. She has gone to England.
A. can’t B. must C. may D. mustn’t
From March 23rd 2013, anyone under the age of 14 ________ go into Disney's US parks alone.
A. couldn't B. mustn't C. needn't D. mightn't
--Look at the boy playing basketball on the ground. Is it George
--It ______ be him. He told me he would play basketball after class, but he’s not sure.
A. mustn’t B. must C. can’t D. may