1. The stadium is located the city center.

2. My office is the second floor. (at/in/on)

3. I'll see you Christmas Day. (in/on/at)

4. My birthday is July.

5. She's her final year at university. (in/on/at)

6. The book is the top shelf. (in/on/at)

7. We're going on vacation August. (in/on/at)

8. There's a concert Friday night. (in/on/at)

9. I usually have breakfast 7:30. (in/on/at)

10. The meeting starts 3 o'clock sharp. (in/on/at)