问题补充:
Though it is the first time they have met, they talked as if they friends for many years.
A. are
B. were
C. had been
D. have been
答案:
A. are
B. were
(答案→)C. had been
D. have been
解析:句意:虽然这是他们第一次见面,但是他们谈话就好像是多年的朋友。As if后面的从句如果和事情不符,用虚拟语气,虚拟过去,用过去完成时。选C。