问题补充：
(·无锡市高三二模)All her hard work in the end, and she finally passed the exam.
A. paid back
B. paid off
C. brought out
D. brought off
答案：
A. paid back
(答案→)B. paid off
C. brought out
D. brought off
解析：选B句意：所有的努力最终得到了回报，她通过了考试。pay back“归还”；pay off“还清；有回报”；bring out“拿出”；bring off“取消”。
