Don’t chase after others in the hallway,because the hallway is so narrow that you can knock into some one.You’d better not to stand on the desk or chair,because once you fall from it,you will get hurt badly.And don’t rush in classroom,either.There are so many students,desks and chairs in classroom; it is really dangerous if you bump into them.Finally,don’t speak loud in classroom because you may interrupt other. 自己写的~楼主参考下~
