26. 1. Sally was sitting on a thick branch of the tree. 2. The streets in our city are never empty ____ cars. 3. People can die ____ this disease. 4. What has happened ____ you? 5. We are proud ____ you. 6. What countries does France border ____ ? 7. The Appalachians is a chain ____ mountains ____ the east of the USA. 8. ____ sea does the Volga flow? 9. The Colorado River flows ____ south. 10. We are tired ____ this business. 11. Our land stretches ____ east. 12. Bill has already been ____ the bank. He is in his office now. 13. He is ____ a car journey. 14. Never laugh ____ children. 15. I am really surprised ____ what you have done.