求一篇初二水平的作文作为一名中学生,你认为课堂上那些言行是礼貌的?哪些是不礼貌的?根据个人的体会,写一篇100字的英语作

As a student in school, wo should be polite in class. I think we should not talk in class without teacher's agree. otherwise, in my opinoin, I think listen to teacher carefully in class is really polite. For example, we will disturb other student if we talk loudly in class, but if we study hard without talking, teacher and others will have a better environment.