问题
选择题
Great changes _______over the years．
A．took place
B．was taken place
C．have taken place
D．happened
答案
答案：C
考查时态。句子中有over the years，故用现在完成时。而take place没有被动语态，故选C。
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Great changes _______over the years．
A．took place
B．was taken place
C．have taken place
D．happened
答案：C
考查时态。句子中有over the years，故用现在完成时。而take place没有被动语态，故选C。