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。每处错误仅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（∧），并在此符号下面写出该加的词。
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).每处错误及其修改均仅限一词；
2).只允许修改10处，多者（从第11处起）不计分。
Zhou Yan is the Senior Three student. Last week, he goes to see a doctor because of his arms and fingers hurt. The doctor told him the fact that had a “mobile phone disease”. Zhou sent messages for his friends with his mobile phone all the time, even in bed. Zhou started to do badly in all the exam because he spent so many time on his mobile phone. He didn't stop use the mobile phone until his arms hurt. Yang Ling, which is an expert from a health center, said students should try to use their mobile phones less, especial at school.
