问题描述：
高中英语题目,希望有详细的解释.
we first met on a train in 2000.we both felt immediately that we _____each other for years. A.knew B.have known C.had known D.know
we first met on a train in 2000.we both felt immediately that we _____each other for years. A.knew B.have known C.had known D.know
问题解答：
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