Fill in the correct prepositions for the following time phrases . Use IN, AT or ON.

1. Saturday
2. July
3. 1985
4. March 25th
5. Friday
6. summer
7. the morning
8. 9 o'clock
9. Christmas
10. September 2nd
11. winter
12. April
13. half past two
14. noon
15. Thursday afternoon
16. Monday morning
17. a quarter past six
18. spring