题目

 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 答案：C 考查时态：第一关键信息为first met in 2000，接下来for years 提示know 动作在felt之前，即过去的过去，因此答案为过去完成时had known。

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