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    I was just about to go to bed last night the telephone rang. A. while B. when C. as D. before 【查看更多】

     

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    31. I was just about to go to bed last night ______ the telephone rang. 

    A. while    B. when    C. as    D. before

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    I was just about to go to bed last night ______ the telephone rang.

    A．while             B．when             C．as               D．before

     

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