15. Great changes in the city and a lot of new buildings .A. have been taken place; have

问题补充：

15. Great changes in the city, and a lot of new buildings .

A. have been taken place; have been set up

B. have taken place; have been set up

C. have taken place; have set up

D. were taken place; were set up

答案：

A. have been taken place; have been set up

(答案→)B. have taken place; have been set up

C. have taken place; have set up

D. were taken place; were set up

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