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】
试题解析：句意：当我经过公园的时候，我看见一些老人在打太极拳。看见某人在做某事用see somebody doing something，所以选C。
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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】
试题解析：句意：当我经过公园的时候，我看见一些老人在打太极拳。看见某人在做某事用see somebody doing something，所以选C。