( ) --I hear someone knocking on the door. It Tom. --Yes, I think so. He said he would come here at seven o’clock. A.must be B.might be C.may be D.can be 查看更多

 

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--I hear someone knocking on the door. It       Tom.

--Yes, I think so. He said he would come here at seven o’clock.

A.must be           B.might be          C.may be            D.can be

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