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    They must have taken party in labor yesteday, ? A.didn’t they? B.mustn’t they? C.haven’t they? D.needn’t they? 1-----5BCDDB 6----10DCBCD 11---14ADDA 精练四 【查看更多】

     

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    They must have taken party in labor yesteday,　　　 ?

    A、didn’t they?　 B、mustn’t they?　　　 C、haven’t they?　　 D、needn’t they?

     

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