1 Don't arrive late for class.不能上课迟到. 2 Don' run in the hallways.不能在走廊跑. 3 Don't fight with someone.不能打架. 4 Don't listen to the music in the classroom.不能在教室里听音乐. 5 Don't wear a hat in the classroom.不能在教室里戴帽子.