Great changes _______ since he left the city.1 were taken place 2have been taken place 3 took place 4 have taken place

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Great changes _______ since he left the city.1 were taken place 2have been taken place 3 took place 4 have taken place
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Great changes _______ since he left the city.1 were taken place 2have been taken place 3 took place 4 have taken place
Great changes _______ since he left the city.
1 were taken place
2have been taken place
3 took place
4 have taken place

Great changes _______ since he left the city.1 were taken place 2have been taken place 3 took place 4 have taken place
since 引导的句子一般用现在完成时!
所以选D

4
因为后面有SINCE

4 since引导的主句用现在完成时
take place不能用被动

4

选4.take place(发生)是不及物动词,没有被动语态,不能选1,2.since接过去时表明"发生"这个动作从过去持续到现在,符合现在完成时的特点.