假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多兩處。每處錯誤僅涉及一個單詞的增加、刪除或修改。
增加：在缺詞處加一個漏詞符號（∧），并在其下面寫出該加的詞。
刪除：把多余的詞用斜線（\）劃掉。
修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。
注意：1.每處錯誤及其修改均僅限一詞；
2.只允許修改10處，多者（從第11處起）不計分。
Dear Daniel，
    I'm sorry to hear that you had the argument with your mother.
    In my opinions，you should apologize to your mother，as she has done nothing wrong prevent you from Internet addiction.Although the Internet plays an important role in modern life，we can't ignore its seriously harm to us.Many students spend most of the time play computer games or chatting aimlessly with others，which may not only result in poor health and decline in study，and also loss of communication in the real world.
    As students，which we devote our energy to should be learning.When available，you may as well walk outside with my friends or took some exercise to keep fit.Only in this way can you live in and study happily and healthily.
Yours，
Li Hua