Clare finally decided to leave the company she for since she graduated from university.A.

问题补充：

Clare finally decided to leave the company she for since she graduated from university.

A. would work

B. has worked

C. was working

D. had worked

答案：

A. would work

B. has worked

C. was working

(答案→)D. had worked

解析：考查时态。根据句意可她在这个公司工作是在她决定离开之前，决定离开使用了过去时，之前就应该使用过去完成时。