By the time Mrs.Jackson arrived in Shanghai,Mrs.Jackson _______ many famous cities in China.A.visited B.was visiting C.had visited D.has visited

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BythetimeMrs.JacksonarrivedinShanghai,Mrs.Jackson_______manyfamouscitiesinChina.A.visitedB.wasvisiti

By the time Mrs.Jackson arrived in Shanghai,Mrs.Jackson _______ many famous cities in China.A.visited B.was visiting C.had visited D.has visited
By the time Mrs.Jackson arrived in Shanghai,Mrs.Jackson _______ many famous cities in China.
A.visited B.was visiting C.had visited D.has visited

By the time Mrs.Jackson arrived in Shanghai,Mrs.Jackson _______ many famous cities in China.A.visited B.was visiting C.had visited D.has visited
C by +过去的时间,主句谓语动词用过去完成时态.

为什么Mrs jack was always spending lot of time and money in doing the shopping 中spend要加ing? Mrs.Lee will move to the new house next Mondy,by which time it will be completely finishen.为什么用by which time 而不用by that time? jack is learning how to tell the time by this clock对this clock 提问 jack is learning how to tell the time by this clock怎么翻译 Mrs. Lee will move into her new house next Monday, ____________it will be completely furnished.A. by that timeB. by the timeC. by which timeD. by some time By the time Mrs.Jackson arrived in Shanghai,Mrs.Jackson _______ many famous cities in China.A.visited B.was visiting C.had visited D.has visited Jack( )his teacher Mrs White in the street,(see) by the time ,by then the article by JACK是指作者是JACK吗? By the time by the time 用by the time造句! by the time怎么造句? by the time +现在式造句 by the time 的用法 by the time 等于什么? by the time to 谢 by the time什么意思