one day, we were taking an exam. the teacher excused herself for a moment. the classroom was quiet and everyone was busy with his paper. i did well and smoothly at first, but some time later, i ran into a difficult question.

　　i used every method but couldn't work it out. most of my classmates had finished and handed their papers in. i got so anxious that i wanted to cheat.

　　but suddenly there was a voice in my mind saying: "be honest, never cheat!" at last, i didn't open my book, and i handed it in without answering that question. although i didn't get a high score, i won in the moral test. to be honest is the most important.

　　donald was not very good at math. but what he thought was not to study harder but to cheat in the exams. in one exam, donald chose to sit next to smith, who was always at the top of the class in math. donald carefully copied smith's answers on to his own exam paper.

　　days later the results came out. and the teacher promised to give a prize to the student who got the highest grade. although donald and smith both got full marks, the teacher gave the prize to smith. donald was angry and said, "that's not fair. i got the same score as smith. ""that's true, "the teacher said, "but you signed the name of smith on your exam paper."