---Have you pleting the work given by your boss?
---Not yet, though I have tried to.
A. devoted to
B. succeeded in
C. failed in
D. managed to
网友回答
A. devoted to
(答案→)B. succeeded in
C. failed in
D. managed to
解析:考查固定词组。Devote to致力于;succeed in doing sth成功做某事;fail to do sth未能做某事;manage to do sth设法成功做某事;句意:—你完成老板给的任务了吗?—还没有。尽管我已经很努力了。故B正确。