Our shool day is over at 3 o'clock задай 5 типов вопросо

1) is your school day over at 3 o'clock?
2) when is your school day over?
3) our school day is over at 3 o'clock, isn't it?
4) is your school day over at 3 or 4 o'clock?
5) what is over at 3'clock?