2．Great changes in China in the past 20 years.A. took placeB. have taken placeC. were tak

发布时间：2020-08-15 02:46:41


2．Great changes      in China in the past 20 years.
A. took place
B. have taken place
C. were taken place
D. have been taken place

网友回答

A. took place
(答案→)B. have taken place
C. were taken place
D. have been taken place
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