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    They didn't start the work their teacher came back. A. until B. while C. as soon as D. if 【查看更多】

     

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    They didn't start the work _______ their teacher came back.
    [     ]
    A. until
    B. while
    C. as soon as
    D. if

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    They didn't start the work ________their teacher came back.

    A. until

    B. while

    C. as soon as

    D. if

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    They didn't start the work ________ their teacher came back．

    [　　]

    A．until

    B．while

    C．as soon as

    D．if

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