When I arrived at the theater,Jim () for me.A.is waiting B.was waiting C.waits D.waiting
问题描述：
When I arrived at the theater,Jim () for me.A.is waiting B.was waiting C.waits D.waiting
答
When I arrived at the theater,Jim (B.was waiting) for me.当我到达剧院时,吉姆正在等我.when引导的是时间状语从句,主句则是在这个特定时间正在发生的行为,要用过去进行时.动词谓语由be动词的过去式加上现在分词do...