We first met on a train in 2000. We both felt immediately that we each other for

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

试题答案

C.

解析此题考查动词的时态。根据题干所提供的信息，首先弄清说话者在谈论过去的事情，因此用过去时，排除 B, D两项，然后考虑动词know在felt之前，即过去的过去，因此用过去完成时。