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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 精練四 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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