问题补充:
—I you for a long time.
--Oh, I in Beijing. I’ve just come back.
A. haven’t seen; am
B. didn’t see; will be
C. haven’t seen; was
D. haven’t seen; have been
答案:
A. haven’t seen; am
B. didn’t see; will be
(答案→)C. haven’t seen; was
D. haven’t seen; have been
解析:句意:我很久没见你了。哦,我去北京了,刚回来。For + 时间段,常于现在完成时连用;根据语境,在北京是一个已经发生了的事情,要用表示过去的时态;have been in一直待在某地,不符合语境;was是一般过去时,对过去的事情进行描述,故选C。