1. It's Sunday tomorrow so I have to get up early.
2. There's no school tomorrow, so the children don't have to go to bed early.
3. We went to a restaurant yesterday, so we didn't have to cook.
4. Let's clean up now, so we won't have to do it tomorrow.
5. It rained yesterday, so I didn't have to water the flowers.
6. Lucy feels better now, so she doesn't have to take the medicine.
7. You've got plenty of time. You have to hurry.
8. He has to shout or else she can't hear him.
9. It was very cold yesterday so I had to wear a coat.
10. She has to wear glasses or else she can't read.
11. I can't go out tonight. I have to study for my exam.
12. I took the dog for a walk this morning so you won't have to take it out tonight.
13. My car doesn't work, so I have to take the train.
14. I broke my tooth, so I had to go to the dentist's yesterday.
