WhenIpassedthesquare,Isawmyneighbor(dance/dancing)happilywithotheroldpeople.Lastnight,Isawthehim(do/doing)hishomework,butIdon'tknowwhetherhehasfinisheditornot.ThismorningIsawhim(do/doing)hishome

题目详情

When I passed the square,I saw my neighbor ______ (dance/dancing) happily with other old people.
Last night,I saw the him ______ (do/doing)his homework,but I don't know whether he has finished it or not.
This morning I saw him ______ (do/doing)his homework for some time and then play basketball.

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答案和解析

dancing
doing
doing

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