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【题目】Must we finish the projict in a month ?--No, you ____

A. mustn’t B. needn’t C. can’t D. don’t

【答案】A

【解析】句意:-我们必须在一个月内完成这个项目吗? - 不需要。A. mustn’t不允许;B. needn’t 不需要;C. can’t 不能; D. don’t不。must情态动词,必须;mustn’t不许,都是有较强语气的情态动词。must的否定答语通常用needn’t来作答。故选:B。

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