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    Sorry, I kept you so long. A. wait B. to wait C. waiting D. waited 【查看更多】

     

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    I'm sorry I've kept you ________ for so long.

    [　　]

    A． waiting　　　　　　B．wait

    C．to wait　　　　　 　D．waited

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    --- I'm sorry to have kept you ________ here so long.

    --- Not at all.

    [　　]

    A．waited
    B．waiting
    C．to wait
    D．were waiting

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