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
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