读下面一段短文，根据上下文意思用方框内的所给词的适当形式填空。
In  （I）school , the rules for students are very strict, but I think they are necessary. Following the rules is everyone’s duty. They keep the students from fighting, smoking,  （make）noise in class and so on.
Most of the   ( student) can follow the rules. But some problem students often break the rules. They destroy public things, such as desks,windows, trees and flowers. So they （punish）. I like the rules, because they make our school 　　 （safety）,they make it a beautiful environment for us to study.