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I saw him___his homework when I passed by last night,but I'm not sure whether he__.A.doing;has finishedB.doing;have finishedC.do;has finishedD.do;have finished原因、、、

分类: 作业答案 • 2022-08-13 12:39:05
问题描述：

I saw him___his homework when I passed by last night,but I'm not sure whether he__.
A.doing;has finished
B.doing;have finished
C.do;has finished
D.do;have finished原因、、、

答

A.doing;has finished

答

A
某一时刻正在做的事,进行时.
三单完成时,has

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