By the time Mrs.Jackson arrived in Shanghai,Mrs.Jackson _______ many famous cities in China.
题目
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
答案
C by +过去的时间,主句谓语动词用过去完成时态.
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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