问题补充:
Great changes in the past few years, and a lot of factories .
A. had taken place; have been set up
B. have taken place; have been set up
C. took place; have set up
D. were taken place; were set up
答案:
A. had taken place; have been set up
(答案→)B. have taken place; have been set up
C. took place; have set up
D. were taken place; were set up
解析:句意:在过去的几年里发生了很大变化,许多工厂都建立起来了。根据in the past few years可知与现在完成时连用,又因为take place没有被动语态,factories与set up之间是被动关系,故选B。
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