пожалуйста помогите доделать.кое что сделали сами

3. You must fasten your seatbelt in the plane
5. You must clean your hands before eating
6. You mustn't eat sweets when you have a stomache
7. You have to get up early not to be late to school
8. You have to wear a uniform at school
9. You don't have to get up early on Sundays