We should try our best to those people after the disaster.
A. break out
B. cheer on
C. break up
D. cheer up
网友回答
A. break out
B. cheer on
C. break up
(答案→)D. cheer up
解析：考查词组：A. break out爆发B. cheer on加油C. break up分手，解体D. cheer up振作起来，句意：我们要尽力使受灾的人振作起来。选D。