作业帮No sooner_____asleep than she heard a knock at the doorA.she had fallen B.had she fallen C.she fell D.she did fall
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No sooner_____asleep than she heard a knock at the doorA.she had fallen B.had she fallen C.she fell D.she did fall
No sooner_____asleep than she heard a knock at the door
A.she had fallen B.had she fallen C.she fell D.she did fall
No sooner_____asleep than she heard a knock at the doorA.she had fallen B.had she fallen C.she fell D.she did fall
B
首先这是一个固定句式：no sooner ...than ,意思是,一...就
要注意的是,no sooner 跟过去完成时,than 跟过去式
第二,这里的no 否定词位于句首,因此要倒装,had 提前,因此是B
倒装句，选B，入睡是在听到敲门之前，听到敲门是过去式，所以是过去完成是