1don'tarrivelateforclass.不能上课迟到.2don'runinthehallways.不能在走廊跑.3don'tfightwithsomeone.不能打架.4don'tlistentothemusicintheclassroom.不能在教室里听音乐.5don'twearahatintheclassroom.不能在教室里戴帽子.6savewater节约用水.7don'tpush不要推搡.8nosmoking不准吸烟?9don'tlitter不乱扔垃圾10saveelectricity节约用电
