Ex. 1 Вставьте предлоги on, in, at 1. His office is the top of the stairs.
2. I spent this weekend a small village the mountains.
3. Jane bought a three-room flat the third floor.
4. Let's meet the exit to the Supermarket.
5. She met the shop the beginning of Central Park.
6. There are a lot of shops the end of the street.
7. There's somebody the door.
8. You are the only one the world who knows it!