----- Nội dung dịch tự động từ ảnh ----- VL 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 ofen 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 16* December. 8. Sam watched football onin 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 moming? 14. What did you do at/in Easter? 15. We'll go to a picnic in/on Saturday.