Краткое пояснение: Объясню значения модальных глаголов и приведу примеры из текста.
- can't: Refusing permission. Example from the leaflet: You can't keep pets in the rooms. (It means students are not allowed to keep pets in the rooms).
- must: Obligation. Example from the leaflet: Students must keep the premises clean and tidy! (It means it is obligatory for students to keep the premises clean and tidy).
- mustn't: Prohibition. Example from the leaflet: You mustn't make noise. (It means students are not allowed to make noise).
Ответ: Объяснения и примеры выше.