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    I have no idea it is that makes him puzzled. A. how B. what C. why D. which 【查看更多】

     

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    I have no idea ______ it is that makes him puzzled.

    A. how     B. what   C.  why    D. which

     

     

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    I have no idea ________ it is that makes him puzzled．

    [　　]

    A．how

    B．what

    C．why

    D．which

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