--When did you become a volunteer for the elderly?-- Two years ago. I        thi

--When did you become a volunteer for the elderly?-- Two years ago. I        thi

题型:不详难度:来源:
--When did you become a volunteer for the elderly?
-- Two years ago. I        this group since then.
A.joinedB.took part inC.have joinedD.have been in

答案
D
解析
有since短语或从句修饰主语通常用完成时,结构为have+过去分词,但在完成时
短暂动词不能和时间状语连用,join属于短暂动词,故只能选D。
举一反三
There _______ less air pollution in the country .
A.areB.is C.haveD.has

题型:不详难度:| 查看答案
There ________ a sports meeting next week.
A.hasB.is going to beC.is going to haveD.will have

题型:不详难度:| 查看答案
---Where is your father? ---He _______ to Shanghai. He has ever ______ there twice.
A.has gone, gone B.has been, beenC.has gone, been D.has been, gone

题型:不详难度:| 查看答案
---I’m sorry. I _____ your printer for such a long time.   ---Never mind.
A.have borrowedB.have lentC.have keptD.have bought

题型:不详难度:| 查看答案
Xiao Li _________ his hometown for ten years.
A.has leftB.1eft C.has been away fromD.went away from

题型:不详难度:| 查看答案
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