短文改错 （共10小题；每小题1分，满分10分）
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改仅限一词。
2. 只允许修改10处，多者（从第11处起）不计分.
Dear fellow students,
There is a serious phenomenon in our school that many students crowded in the school store to buy snacks and some students even eat snacks in class.
Eating snacks are a bad habit and is also waste of money. In addition to, most snacks are unhealthy food, for they contain too many fat and sugar. Eating snacks improper may lead to fatness and illness. What’s more, some students throw the wrappers everywhere, that pollutes our campus.
Dear fellow students, it’s high time that we pay attention to this phenomenon. Our high school students, should develop good eating habits. Remember that three regular meals a day as well as a balance diet is essential for us.