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        1. 33.―Have you finished your homework.Adson?―No.Not yet.―Then you go out to play basketball.You must finish your homework first.A.can't B.mustn't C.must D.needn't 查看更多

           

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          —Have you finished your homework,Adson?

          —No,not yet.

          —Then you ________ go out to play basketball.You must finish your homework first.

          A.can't             B.mustn't            C.must                D.needn't

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