题目内容

When the teacher came in, he saw some boys _______ behind Daniel, _______ the computer games.
A.sit, watchingB.sitting, watchingC.sit, to watchD.sitting, watched
B
第一空考查的是see sb doing sth,表示看见某人正在做某事,后一空为动词的现在分词作时间状语,故选答案为B
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