— Jack, do you know anything about Doctor Brown?
— I _____ to him for years. I don't see how anyone else could do better.[ ]
A. went
B. will go
C. had gone
D. have been doing
答案:D
— Jack, do you know anything about Doctor Brown?
— I _____ to him for years. I don't see how anyone else could do better.[ ]
A. went
B. will go
C. had gone
D. have been doing
答案:D