—Did you meet the professor at the airport?—No he by the time I thereA. had left；gotB.

问题补充：

—Did you meet the professor at the airport?

—No，he by the time I there．

A. had left；got

B. has left；reached

C. was leaving；got

D. left；had got

答案：

(答案→)A. had left；got

B. has left；reached

C. was leaving；got

D. left；had got

解析： 根据上文，下文叙述应是过去时态。根据下文时间状语，我到那时,他已离开了,选A.