题目内容

【题目】–Must I do my homework now ? ---No, you ______ . You may do it tonight.
A.can't
B.needn't
C.mustn't

【答案】B
【解析】句意：——我必须现在做作业吗？——不，你不必，你可以今天晚上做。回答must，肯定用yes， you must；否定回答用No，you needn't。can't不可能；不能；mustn't表示禁止。故选B。

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