Вставьте в пропуски модальные глаголы must, mustn`t, have to, don`t have to, doesn`t have to.

i …. get up early because i live far from school.
it`s very late, but i…. finish my homework before i go to bed.
he ….go out. it`s very cold.
i … go to school on sundays.
i….go. i… help my mother​