see sb.do sth和see sb.doing sth.的区别?

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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?

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  • 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