Great changes __________ in our institute in the last few yearsA.have taken placeB.has tak

外语类 公共英语 已帮助 人

Great changes __________ in our institute in the last few years

A.have taken place

B.has taken place

C.took place

D.had taken place

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。