Hi.Peter! Hi.Tom．I know you here．How long have you been here?( )A．don't, areB．did't, areC．didn't, wereD．don't, were 题目和参考答案——青夏教育精英家教网—

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8．Hi，Peter!
Hi，Tom．I _______ know you ______ here．How long have you been here？（　　）

A．

don't； are

B．

did't； are

C．

didn't； were

D．

don't； were

分析 --嗨，Peter！
--嗨，Tom．我不知道你在这里．你在这里呆了多久了．

解答答案：C．
根据How long have you been here，可知现在你在这里，那么我不知道你在这里应该是过去发生的事情，所以句子用一般过去时，know是一个实意动词，它的否定式需要加助动词did，用didn't表示，主句用了一般过去时，从句也应该用过去时，所以这里应该用were．故选C．

点评据给出的句子信息判断出句子的时态，然后根据题目要求正确作出解答．

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