1) it is half past 4

2)it is 20 minutes past 5

3)it is 9 o"clock

4)it is a quarter past 1

5)it is a quarter to 11

6)it is 25 minutes past 1

7)it is 25 minutes to 7

8)10 o'clock

9)it is 10 minutes to 12

10)it is 15 minutes past 8

11)it is 5 minutes to 12

12)10 o'clock