VI. Underline the correct preposition to complete the sentences.
1. What will you do on/in Monday?
2. It is often rainy at/in autumn.
3. What did you do in/at the afternoon?
4. I often get up on/at 7o’clock.
5. Flowers are beautiful at/in spring.
6. I watched a new film on/at midnight.
7. My brother’s birthday is at/on 16th December.
8. Sam watched football on/in the evening.
9. Do you get presents on/in Christmas Day?
10. We had lunch at/on noon.
11. My father was born on/in 1970.
12. It is very cold at/in winter.
13. Will you go to the club on/in Friday morning?
14. What did you do at/in Easter?
15. We’ll go to a picnic in/on Saturday.