单选题In our company, great changes _____ since the new manager came.Atook placeBtake placeCwill have taken placeDhave taken place

单选题
In our company, great changes _____ since the new manager came.
A

took place

B

take place

C

will have taken place

D

have taken place


参考解析

解析:
句意:自从新经理来后,我们公司发生了很大的变化。时间标志since表明这里应该用现在完成时态,结构为have done。故D为正确答案。A项过去式,B项现在时,C项将来时都不符合。

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