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    I’m not sure he will come back home tomorrow or not. A. when B. what C. whether D. where 【查看更多】

     

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    I'm not sure ________ he will come back home tomorrow or not.

    A. when

    B. what

    C. whether

    D. where

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    I’m not sure ________ he will come back home tomorrow or not．

    [　　]
    A．

    when

    B．

    what

    C．

    whether

    D．

    where

    查看答案和解析>>


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