While________ along the road, Mr. Smith met an old friend of his.A．walkedB．he is
题型：不详难度：来源：
While________ along the road, Mr. Smith met an old friend of his.| A．walked | B．he is walking | C．walking | D．is walking |
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答案
| C |
解析
试题分析：考查状语从句及其省略。句子可还原成由while引导的时间状语从句，While he was walking along the road, Mr. Smith met an old friend of his.故B错误在is应改成was。状语从句的省略是指省略从句的主语和部分谓语，即省略he was，故选C |
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