Put the prepositions of time (in , on, at).
1. ___ nine o'clock, ___ 3.45 p.m.
2. ___ Monday, ___ Wednesday
3. ___Sunday morning, ___Tuesday afternoon
4. ___the weekend, ___ weekends
5. ___ Christmas, ___ Easter
6. ___ January, ___ February
7. ___ 2nd May, ___ 15th June
8. ___ 1812, ___ 1990, ___ 2019
9. ___ the autumn , ___ the winter