Great changes<u> </u>in China in the past 20 years.
A.tookplaceB.weretakenplaceC.havetakenplaceD.havebeentakenplace...
A. took place
B. were taken place
C. have taken place
D. have been taken place 展开
B. were taken place
C. have taken place
D. have been taken place 展开
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答案C
考查时态，take place与happen这两个词没有被动语态，in the past 20 years表明应该用完成时态。故选C
考查时态，take place与happen这两个词没有被动语态，in the past 20 years表明应该用完成时态。故选C
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