问题补充：
He left Wenzhou for Beijing last year, and we him ever since.
A. hadn’t seen
B. haven’t seen
C. didn’t see
D. wouldn’t see
答案：
A. hadn’t seen
(答案→)B. haven’t seen
C. didn’t see
D. wouldn’t see
解析：考查时态。ever since“从那以后”，常与现在完成时连用。句意“他去年离开温州，去了北京；从那以后，我们就没有再见过他。”故选B。
