30．--Must I return the book right now?--No.you ．You can return it tomorrow．A．needn't B．mustn't C．may not D．can't 【查看更多】

 

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--Must I return the book right now?

--No，you         ．You can return it tomorrow．

A．needn't                B．mustn't                C．may not                 D．can't

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