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    ( ) The key for locking the classroom door. A. uses B. is using C. is used D. use 【查看更多】

     

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    The key ________ for locking the classroom door.

    [　　]

    A. uses
    B. is used
    C. is using
    D. use

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    The key ________ for locking the classroom door.

    [　　]

    A. uses
    B. is used
    C. is using
    D. use

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    The key ________ for locking the classroom door.

    [　　]

    A．uses
    B．is used
    C．is using
    D．use

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    The key _____ locking the classroom door.
    [     ]
    A. uses to
    B. is used to
    C. is using for
    D. is used for

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