问题
John and I _____ friends for eightyears. We first got to know each other at a Christmas party. But we _____ eachother 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
B:have been； have met
C:had been； had met
D:have been； had met
正确答案是：
