Put AT, IN. ON or ~ if no preposition is needed

11.3. Put AT, IN. ON or ~ if no preposition is needed
1. It's traditional here to celebrate ............ the first day of Spring.
2. A woman sitting near me ......... dinner spilt her drink all over me.
3. We meet ........... every Saturday after noon to go shopping.

4. The program was shown on TV .......... one afternoon
5. We all met ............ Easter Day and went for a walk.
6. He painted the whole house.....
+... only 3 weeks.
7. You'll be about to see her ............ the day after tomorrow.
8. I often get my salary ........... the fifth of the month.