Her design won the first prize in the petition. Years of patience and hard work had at last .
A. put off
B. paid off
C. taken off
D. kept off
网友回答
A. put off
(答案→)B. paid off
C. taken off
D. kept off
解析：考查短语辨析。put off 推迟，paid off 还清，得到回报，taken off 起飞，kept off 远离，句意：她的设计在比赛中获得了一等奖，几年的耐心和努力工作最终得到了回报。所以选B。