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    –Do you think Professor Smith be in the lab? --I’m not sure. A. must B. shall C. need D. can 【查看更多】

     

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     –Do you think Professor Smith_________be in the lab?

    --I’m not sure.

    A. must   B. shall   C. need   D. can

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    –Do you think Professor Smith_________be in the lab?

    --I’m not sure.

    A．must

    B．shall

    C．need

    D．can

     

    查看答案和解析>>


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