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    13．John knocked at the door for nearly five minutes his wife opened it． A．when B．before C．until D．while 【查看更多】

     

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    John knocked at the door for nearly five minutes ________ his wife opened it．

    [　　]

    A．when

    B．before

    C．until

    D．as

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    John knocked at the door for nearly five minutes____his wife opened it.

    A．when

    B．before 　　

    C．until 　　

    D．as

     

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    John knocked at the door for nearly five minutes____his wife opened it.

    A．whenB．before 　　C．until 　　D．as

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