Question

John and I_________ friends for eight years.We first got to know each other at a Christmas party.But we________ each other a couple of times before that

1. A.
   had been； have met
2. B.
   have been； have met
3. C.
   had been； had met
4. D.
   have been； had met

Answer 1

D
解析：
for+时间段表示从过去某时延续至今的动作或状态，用现在完成时；
meet发生在got to know 这一过去动作之前，用过去完成时。