6 Choose the correct preposition. 1. Let's go to the club on / at Friday. 2. We can meet in / at 6 p.m. 3. The war began in / on 1939. 4. I always eat a lot of eggs on / at Easter. 5. Let's go to Paris of/ at the weekend. 6. Lucy was born in / on May. 7. Tim's birthday is at / on 12th December. 8. Susan can't sleep on / at night. 9. I often read English newspapers in / at the evening. 10. That battle was in / on the 11th century.