4 Write the correct preposition, in, on or at.

4. Write the correct preposition, in, on or at:

1. on Monday, Sunday, Friday
2. in September, 2023
3. at 10 am, 2 pm, midnight
4. in the morning, the afternoon, the evening
5. at lunchtime, at the weekend, at night
6. on 29th August, 31st December, 2nd May