7:15- It is fifteen minutes past seven. It is a quarter past seven
7:45 - It is fifteen minutes to eight. It is a quarter to eight
8:30 - It is half past eight
9:00- It is nine o* clock sharp
10:45- It is fifteen minutes to eleven. It is a quarter to eleven
11:40- It is twenty minutes to twelve.
12:10- It is ten minutes past twelve
12:50- It is ten minutes to one.
at seven oclock fifteen minutes
at seven oclock forty-five minutes
at eight oclock thirty minutes
at nine oclock
at ten oclock forty-five minutes
at eleven oclock forty minutes
at twelve oclock ten minutes
at twelve oclock fifti minutes