问题描述：
in是不是用现在完成时
In the past few years _______ great changes in Shanghai.
A.there have been
B.there have
C.there were
D.there will be
我选的是C可答案A,domo!
In the past few years _______ great changes in Shanghai.
A.there have been
B.there have
C.there were
D.there will be
我选的是C可答案A,domo!
问题解答：
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