C.playing
就像你说的,要么do,要么doing,符合条件的,只有C.
D 多了一个s
see sb.do sth和see sb.doing sth.的区别?
see sb.do sth和see sb.doing sth.的区别?
I saw a group of boys ( )football on the playground.
A.played B.to play C.playing D.plays
该选哪个,为什麽?
I saw a group of boys ( )football on the playground.
A.played B.to play C.playing D.plays
该选哪个,为什麽?
英语人气：210 ℃时间：2019-11-20 05:48:19
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