Great changes______ place since he left here.

admin2009-06-21  30

问题 Great changes______ place since he left here.

选项 A、have been taken
B、have taken
C、were taken

答案B

解析 take place 为固定搭配,指“(事物)发生”,它用物作主语,只用主动语态。状语从句用since 引导,主句应用完成时。
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