—You seem familiar with Mr. John?—Sure we together for three years in the 1990s.A. have

问题补充：

—You seem familiar with Mr. John?

—Sure, we together for three years in the 1990s.

A. have worked

B. had worked

C. are working

D. worked

答案：

A. have worked

B. had worked

C. are working

(答案→)D. worked

解析：句意：--你似乎与约翰先生很熟。—当然了，我们在20世纪90年代时在一起工作了三年。因为这里有明确的过去的时间状语，故用过去式，故选D。