Выбрать и написать правильный модальный глагол.

1. I must / have to visit my friend. It is her birthday.
2. I can / must pay your rent. That’s the rule.
3. You mustn’t / can’t eat in the classroom. It’s forbidden.
4. Sally is ill. She has to /mustn’t stay in bed.
5. Can / Must I stay out late tonight?