——Must I be back home before 6 o’clock?
——No, you ____. Butdon’t be too late.
- A.can’t
- B.mustn’t
- C.needn’t
- D.won’t
正确答案及解析
正确答案
C
解析
句意：——我必须在6点钟以前回家吗?——不，你没有必要。但是不要太晚。
本题主要考查情态动词的否定用法。can't不能，不可能，mustn't禁止，needn't不必，won't将不。must构成的一般疑问句，否定回答是没这个必要，用needn’t或don’t have to，故本题选C。
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