C
当我看到玛丽的时候,她正在弹钢琴
因为从句是过去时态,从句也应该用过去时态 同时 过去看她的时候 她正在弹琴 所以是过去正在进行时
希望能够帮到楼主
When I saw Mary,she ______ on the piano.选项:a、is playing b、plays c、 was playing d、played
When I saw Mary,she ______ on the piano.选项:a、is playing b、plays c、 was playing d、played
英语人气：316 ℃时间：2019-10-05 20:25:09
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