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You phone him if you want to, but you . He is sure to phone you.A.may; mustn'tB.

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You phone him if you want to, but you . He is sure to phone you.A.may; mustn'tB.

You ______ phone him if you want to, but you ______. He is sure to phone you.

A.may; mustn't

B.have to; needn't

C.can; doesn't need

D.can; needn't

试题答案

D

can表示许可；needn't (＝don't have to) 意为“不必要”。

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