While_________in Britain, he made friends with the natives thereA.workingB.workedC.he worksD.he is working
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A解析试题分析：考查状语从句的省略句：while引导的时间从句在与主句（he made friends with the natives there）主语一致的时候，其主语和be动词可以省略，原句是While he is working in Scotland, he made friends with the natives there.省略后，就是while working…，句意：在英国的时候，他和当地人交朋友。选A。考点：考查状语从句的省略句