Fill in the gaps with have to, has to, Does ... have to, Do ... have to, don't have to or doesn't have to

1. Cats have to drink milk every day. (✔)
2. You have to eat vegetables. (✔)
3. My brother doesn't have to walk the dog today.(x)
4. Does she have to wear a uniform at school? (✔)
5. We don't have to buy tickets. They're free! (x)
6. The baby has to sleep at 7 p.m. (√)
7. I don't have to make my bed. Mum says it's okay. (X)
8. Robots don't have to eat food. (x)
9. They don't have to wait for the bus. It's here! (x)
10. Dad has to wash the car every week. (✔)
11. You don't have to watch this film. It's boring! (x)
12. Does your dog have to wear a coat in winter? (✔)
13. The king has to wear a crown. (✔)
14. We have to be quiet in the museum. (✔)
15. She doesn't have to clean her room. It's tidy! (x)
16. Unicorns don't have to wear shoes. (X)
17. I have to help my little sister with homework. (✔)
18. The post office doesn't have to open on Sundays. (X)
19. Do you have to go to bed early? (✔)
20. My hamster has to sleep in a dark place. (✔)