假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，要求你在错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（^）,并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Schools should be clean and pure place. But now something bad happens. Some students cheated in examinations at school. As students, we often have examinations, many of which are sometime too difficult for us. In addition, some students not work hard at their lessons. So when taking examinations, they are dishonest in order that get better results to please his parents and teachers. I think it wrong to cheat in examinations though it breaks the rules of schools. We students should be honest and try to get good grades in studying hard instead of by cheating in the examinations. What's more, we should improve our study methods and get good prepared for examinations.