He ____basketball on the plaground just now,but i'm not sure whether he's still there.
A was seen to play B was seening playing Cis seen to play Dis seening playing
人气：404 ℃ 时间：2020-04-12 11:07:26
解答
选A
首先,just now(刚才)用于一般过去时,排除C,D
其次,根据题意,他是被看见在操场上打篮球的,所以用被动语态：be seen to do sth.
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