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问题: Must we bring all the books with us?

-Must we bring all the books with us?
-No,you__.You__bring some of them.
A.can't;may B.may not;will C.mustn't;can
D.needn't;may

解答:

must 的否定回答有两种,一是,needn't 另一种是 may not,而且问句问的是将来要发生事,使用,用 will