题目内容
8．He used to be seen morning exercises at 7o'clock in the morning．（ ）| A． | do | B． | did | C． | doing | D． | to doing |
分析 过去经常有人看见他在早晨七点钟做早操．
解答 答案：C．
本题考查非谓语动词的用法．根据语境推测句意是"过去经常有人看见他在早晨七点钟做早操．"由设空处前面的used to be seen 判断此题考查句式"see sb．doing"； 所以选C．
点评 本题考查非谓语动词的用法，抓住句中的关键词并联系相关的语法知识可得出正确的答案．平时注意对此类短语或句式用法的总结与归纳．
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