问题补充：
Although they met with so many difficulties and hardships, they finish the hard
task .
A. succeeded to, in time
B. tried to, on time
C. sought to, by time
D. managed to, on time
答案：
A. succeeded to, in time
B. tried to, on time
C. sought to, by time
(答案→)D. managed to, on time
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