English Lesson #15: Necessity and Obligation

I have to get up early every day.
She has to work six days a week.

Do you have to wear a uniform at work?
Yes, I do. / No, I don't.
Does he have to do housework on weekends?
Yes, he does. / No, he doesn't.

Safety equipment must be worn at all times.

I have to go now. / I must go now.
We have to get more exercise. / We must get more exercise.

I don't have to drive to work. I can walk.
BUT: You mustn't tell anybody about my secret.

English task: What do you have to do every day?
Are there any rules at school or at work?