问题补充：
Great changes in the city, and a lot of factories .
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
解析：考查时态语态：句意：这个城市发生了许多变化，盖起了许多工厂。所以用现在完成时，take place不能用被动，set up和factories是被动关系，用被动。选B。
