-Have you known him for a long time? -Yes since he here after graduation. A. comesB. cam

问题补充：

-Have you known him for a long time?

-Yes, since he here after graduation.

A. comes

B. came

C. has come

D. had come

答案：

A. comes

(答案→)B. came

C. has come

D. had come

解析：这题考查时态,since引导的时间状语从句用过去时，表示自从过去某个时间，主句用现在完成时，句意是：--你认得他很长时间了吗？--是自从他毕业后来到这儿。选B。