Fatherwassleepingdeeply       MumwaswatchingTV.  A...

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问题详情:

     Fatherwassleepingdeeply       MumwaswatchingTV.  A...

      Father was sleeping deeply        Mum was watching TV.

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

【回答】

B

知识点:连词

题型:选择题

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