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英语
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While I ___ a novel,someone ___at the door.
A.read,was knockingB.read ,knockedC.was reading,knockedD.was reading,was knocking
为什么?
人气：364 ℃ 时间：2020-02-03 13:42:54
解答
D
当我正在读小说时,某个人在敲门
while后一般接进行时,这样后面就应该用过去进行时
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