问题补充:
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.
A. had been; have met
B. have been; have met
C. had been; had met
D. have been; had met
答案:
A. had been; have met
B. have been; have met
C. had been; had met
(答案→)D. have been; had met
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。