问题补充:
Tim since he lost his job three weeks ago.
A. had been unemployed
B. was unemployed
C. has been unemployed
D. has unemployed
答案:
A. had been unemployed
B. was unemployed
(答案→)C. has been unemployed
D. has unemployed
解析:考查时态。根据句中时间状语since he lost his job three weeks ago.,可知用现在完成时。根据句意用其被动形式。句意:自从Tim三个周前失业以来还没有被雇佣。