IV、选择正确的答案,将答案前面的字母编号填在题前的括号里。(10分)
( )1. - Are these your socks? - __________.
A. Yes, they aren’t. B. Yes, it is. C. No, they aren’t.
( )2. It’s 9:30. It’s time _______ go to bed.
A. for B. to C. in
( )3. -- How many _______ are there? -- There are fifteen.
A. sheeps B. sheep C. sheepes
( )4. -- What would you like? -- I’d like some ________.
A. potato B. potatos C. potatoes
( )5. This is _____ carrot. That is _____ onion.
A. a, a B. an, a C. a, an