Question

Fill in the gaps. Use at, in or on. My birthday is _ 23 July. _ this day I get up _ 9 o'clock and help my mother to clean the flat. _ July we don't have school and my friends come _ 12 o'clock. We play, sing and dance.

Answer 1

My birthday is on 23 July.
  On this day I get up at 9 o'clock and help my mother to clean the flat.
In July we don't have school and my friends come at 12 o'clock.
We play, sing and dance.

Answer 2

My birthday is on 23 July. 
on this day I get up at  9 o'clock and help my mother to clean the flat. 
in  July we don't have school and my friends come at 12 o'clock. 
We play, sing and dance.

Answer 3

My birthday is on 23 July. On this day, I get up at 9 o'clock and help my mother to clean the flat. In July, we don't have school and my friends come at 12 o'clock. We play, sing, and dance.