Nice to see you. I____ you for a long time. I_____ in Beijing.

Nice to see you. I____ you for a long time. I_____ in Beijing. I have just come back. A. hadn’t seen, am B. haven’t seen , was C.didn’t see, will be D. haven’t seen, shall be

A.A

B.B

C.C

D.D

正确答案是B