Помогите с англиским!!!Срочно!!Я не понимаю тему!!!!

It's half past 4.It's half past 2.It's a quarter to 5.It's half past 9.It's 2 o'clock.It's 11 o'clock.It's 6 o'clock.It's a quarter past 12.It's 5 o'clock.