______the airport, they waved again and again to me.

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问题 ______the airport, they waved again and again to me.

选项 A、When left
B、When leave
C、When to leave
D、When leaving

答案D

解析 根据英语分词作状语的用法规定,分词所表示的动作如为句子主语发出的动作,应用现在分词,故选D
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本试题收录于: 英语题库普高专升本分类
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