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10.Hardly ________ when she ________ someone knocking at the door.(  )
A.did she sit,heardB.did she sit,had heard
C.had she sat,had heardD.had she sat,heard

分析 她一坐下来,就听到有人在敲门.

解答 答案:D  本句中hardly是否定词,位于句首,主句需要部分倒装,根据句意,主句动作发生在从句动作之前,所以用过去完成时,所以本题选择D.

点评 表否定意义的否定词或者短语位于句首,需要倒装.

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