Translate the following sentence into English.
输了比赛，那些男孩子们非常难过，觉得辜负了学校的期望。
【正确答案】：
THE BOYS FELT VERY UPSET WHEN THEY LOST THE GAME, THINKING THEY FAILED TO LIVE UP TO THE EXPECTATIONS OF THE SCHOOL.
【题目解析】：
本题考查常见动词短语和非谓语动词作伴随状语。
fail to do...意为“未能做某事”，“不辜负”——live up to...，主句使用when引导的时间状语从句即可，然后使用现在分词作伴随状语表示男孩子们的心理活动。
故整句为：The boys felt very upset when they lost the game, thinking they failed to live up to the expectations of the school.