Directions：Write an English composition according to the instructions given below in Chinese．
李平因在学校使用手机被学校处分，他感到很困惑，写信向你求助。请根据以下结构提示给李平回信。开头结尾已给出。     

优点	缺点	个人观点
1.与家人联系方便； 2.容易找到朋友； 3. QQ聊天很流行；	1. 课上发短信，玩游戏； 2. 晚上使用影响休息； 3. 考试中用短信作弊；	1.知道手机危害 2.支持学校规定

注意：1) 字数120词左右；
Dear Li Ping,
Your letter reached me yesterday. It is said in your letter that you are punished for using a cell-phone. _________________________________________________________________
___________________________________________________________________________
________________________________________________________________________________________________________________________________________________________
______________________________________It is right for school to prevent you from using cell-phones in school.
Yours ever,