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    While in the room, we were all very excited. A. waited B. waiting C. to wait D. wait 【查看更多】

     

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    While _____ in the room, we were all very excited.

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

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    While _____ in the room, we were all very excited.

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

    查看答案和解析>>


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