问题补充:
--- Bob, where are you working now?
--- I used to work in a small company, but I a job in some bigger companies.
A. have sought
B. had sought
C. was seeking
D. am seeking
答案:
A. have sought
B. had sought
C. was seeking
(答案→)D. am seeking
解析:可联系答.案.网客服索取。