Ответ:
I must go to school from Monday to Friday. We don't have to wear a uniform, so i normally wear sports clothes. We mustn't arrive late, and we must go to every class. In class we mustn't shout, play or sing. We don't have to lunch at school, so I sometimes go home. When school finishes, I must look after my sister. When my parents come home I don't have to stay in, so I ususally go out with my friends. When I get home, I must do my homework. I must go to bed late, except on Fridays, when i must go to bed before midnight.
Объяснение:
must – обязан, mustn't – не должен, don't have to – не следует.