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    I was listening to the music there was a knock at the door. A. while B. when C. because D. until 【查看更多】

     

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    I was listening to the music ________ there was a knock at the door．

    [　　]

    A．while

    B．when

    C．because

    D．until

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    I was listening to the music ________ there was a knock at the door.

    [　　]

    A．when
    B．while
    C．because
    D．until

    查看答案和解析>>


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