Question

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

Answer 1

(1) at (2) in правильный ответ

Answer 2

We usually start school at nine o'clock on the 1st of september.