
When and why he came here ________ yet.选什么
Whenandwhyhecamehere________yetA.isnotknownB.arenotknownC.hasnotknownD.havenotknown为什...
When and why he came here ________ yet
A. is not known B. are not known C. has not known D. have not known
为什么选B不选D?他什么时候,为什么来的都不知道,不是过去来的,但是到现在还不知道吗?为什么不是用完成式 展开
A. is not known B. are not known C. has not known D. have not known
为什么选B不选D?他什么时候,为什么来的都不知道,不是过去来的,但是到现在还不知道吗?为什么不是用完成式 展开
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