题目内容
【题目】When I walked past the playground,I saw many boys________basketball.
A.play
B.played
C.playing
D.are playing
【答案】C
【解析】see sb.do sth.和see sb.doing sth.都是正确的结构。结合句意可知,“我”路过操场的时候,看到许多男孩正在打篮球。表示看到正在进行的动作要用see sb.doing sth.的结构。故答案为C。
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