题目内容
【题目】When I walked past the park. I saw some old people _________Chinese Taiji.
A. do B. did C. doing D. are doing
【答案】C
【解析】试题分析：句意：当我走过公园时，我看见一些老人在连太极拳。see sb doing sth“看见某人正在做某事”，故此处用现在分词doing，故选C。
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【题目】When I walked past the park. I saw some old people _________Chinese Taiji.
A. do B. did C. doing D. are doing
【答案】C
【解析】试题分析：句意：当我走过公园时，我看见一些老人在连太极拳。see sb doing sth“看见某人正在做某事”，故此处用现在分词doing，故选C。