I ______ in a foreign company in Shanghai for six years. Still, I don't regret giving up the well-paid job and returning to my hometown.

A. worked　　　 B. have worked　　 C. was working　　 　 D. had worked

I ______ in a foreign company in Shanghai for six years. Still, I don't regret giving up the well-paid job and returning to my hometown.

A. worked　　　 B. have worked　　 C. was working 　 D. had worked

I _________ in a foreign company in Shanghai for six years．Still, I don' t regret giving up the well paid job and returning to my hometown．

1. A.
   worked
2. B.
   have worked
3. C.
   was working
4. D.
   had worked