It six years since they last saw each other.A. wasB. had beenC. isD. would have been

问题补充：

It six years since they last saw each other.

A. was

B. had been

C. is

D. would have been

答案：

A. was

B. had been

(答案→)C. is

D. would have been

解析：考查时态。句意：自从他们上次见到彼此有六年的时间了。结合语境可知主句表示的是客观存在的一个事实，故用一般现在时态，选C。