We usually start school (1).....nine o'clock (2)........1 st september (1)on(2)in (1)at (2)on (1)in (2)at (1)at (2)ih

We usually start school at nine o'clock on the 1st of September. — Обычно мы начинаем уроки в 9 часов 1 сентября.

We usually start school at nine o'clock on the 1st of September, do not we?

Do we usually start school at nine o'clock on the 1st of September?

Who usually starts school at nine o'clock on the 1st of September?