HAVE TO:
1) Sorry, I can’t go out right now, I have to do my homework.
2) I have to put my glasses on, I have a bad vision.
3) I have to wash the dishes before my mom comes.
4) My friend have to buy new bike as his is broken.
DON’T/DOESN’T HAVE TO:
1) You don’t have to do this exercise right now, we will do it later.
2) She doesn’t have to take her t-short with her, I will give her mine.
3) We don’t have to put on warm clothes, it’s hot outside.
4) He doesn’t have to take a role in this spectacle, if he has no desire.