问题 选择题

--Must we hand in our homework now?---No, you ___. You ___ hand them in before Friday.

A.mustn’t , can

B.needn’t, can

C.can't , can

D.mustn’t, must

答案

答案:B

must(必须),它的否定形式是needn’t,此处的can表示“可以”.

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