问题
选择题
27. Great changes _______in our city in the past twenty years.
A．have been taken place
B．have taken place
C．took place
D．were taken place
答案
答案：B
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27. Great changes _______in our city in the past twenty years.
A．have been taken place
B．have taken place
C．took place
D．were taken place
答案：B