题目内容
13．---Must we clean the house now？---No，you _______．（ ）
| A． | needn't | B． | may not | C． | mustn't | D． | can't |
分析 --我必须现在打扫房子？
--不，你不必．
解答 答案：A．
mustn't禁止；can't不能；needn't不必；may not不可以；情态动词must引导的一般疑问句，否定回答用needn't；故选：A．
点评 此题考查情态动词must引导的一般疑问句的否定回答．
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