题目内容
19.--____ I finish my homework now?--No,you ___.Your work is over today.| A. | Can't,must | B. | Must,don't have to | ||
| C. | May,couldn't | D. | Couldn't,could |
分析 --我现在必须完成作业吗?
--不,你不必.你今天的工作结束了
解答 答案:B.根据No,可知第二空必须要用否定式,所以排除AD.对于may开头的一般疑问句,不能用couldn't来回答,所以排除C.对"must(必须)"开头的一般疑问句的否定回答用needn't或don't have to,表示不必.故选B.
点评 本题考查了情态动词的用法.解答时注意理解句意以及所给选项的意思并作出正确选择.
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