1. Students musn't use smartphones
2. Students must do homework on time
3. Students mustn't chew gum at school
4. Students must respect teachers and other students
5. Students must stand up when the teacher enters in classroom
6. Students must never cheat in exams
7. Students musn't run in corridors
8. Students must be quiet in the library
Объяснение:
Это легко must - должен mustn't - не должен а остольное ты можешь перевести на разных сайтах если не можешь сам
