速求******When did you _this bike?I've _ since two y

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速求******
When did you _this bike?I've _ since two years ago.为什么第二个空用had而不用bought?
We don't know _ it next.Let's go and ask Mr Li .
A.what to do B.to do what C.whether to do D.,to do whether
为什么不选A 选C?

uy had /kept 段时间用延续性动词
C 我们不知道下一步是否要做这件事.
A what 和it 重复

since when did you two become such good friends? When did you study in france?A,Two years ago B,Since two yea When did you start to play the piano A.For two years B.Since Ever since I was in a high when I met you, I've fell in love Ever since I was in a high when I met you, I've fell in I've done my homework When ____ you _____ it A.did ;did B.di when did you start to play tennis?A.when I was ten b.since t I've come _(get)my bike back .Uncle Wang! -When did you __________? I've loved you since the first time I saw when did you buy the camera?I have had it for two days.A：hav 怎样理解I have had the bike for two years/since two years ago中的h