问题补充：
Great changes in the city and a lot of buildings .
A. have taken place, have been set up
B. have been taken place, have been set up
C. were taken place, were set up
D. have taken place, set up
答案：
(答案→)A. have taken place, have been set up
B. have been taken place, have been set up
C. were taken place, were set up
D. have taken place, set up
解析：考查被动语态。句意“这座城市发生了巨大的变化，许多大楼已经被建好了。”take place“发生”，无被动形式，排除B、C；buildings和set up是被动关系，应该用被动形式。故选A。
