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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:832

Great changes __ in the city in the past 20 years, and a lot of factories ____.

A.have been taken place; have been set up
B.have taken place; have set up
C.have taken place; have been set up
D.were taken place; were set up
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Greatchangesinthecityinthepast