What time is it ? It is one o`clock.
What time is it ? It is two o`clock.
What time is it ? It is three o`clock.
What time is it ? It is four o`clock.
What time is it ? It is five o`clock. 
What time is it ? It is six o`clock.
What time is it ? It is seven o`clock.
What time is it ? It is eight o`clock.
What time is it ? It is nine o`clock
What time is it ? It is ten o`clock.
What time is it ? It is eleven o`clock.
What time is it ? It is twelve o`clock.