题目
Great changes _______ since he left the city.
1 were taken place
2have been taken place
3 took place
4 have taken place
1 were taken place
2have been taken place
3 took place
4 have taken place
提问时间：2020-11-10
答案
since 引导的句子一般用现在完成时!
所以选D
所以选D
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