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Oh, it's you, I you were here too. [ ] A.don't knowB.didn't know C.haven't known

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Oh, it's you, I you were here too. [ ] A.don't knowB.didn't know C.haven't known

Oh, it's you, I ________ you were here too.

[]

A.don't knowB.didn't knowC.haven't knownD.hadn't known

试题答案

答案:

解析:

句意:哦,是你。我原来不知道你也在这儿。很明显,说话时已经知道“you”在这儿这一事实,故“原来不知道……”应用过去时态。