1 Bob is one of OUR best pupils. 2. It isn't MY bag. I've left mine at home. 3. I've just waxed the floor. Don't walk onit yet. 4. Let THEM read the story again. 5. Will you tell US about Great Britain? 6. Is this Mary's scarf? No, it is MINE.7. YOUR house is not far from OURS. 8. Whose cigarettes are these? They may be OUR cigarettes. Oh, yes, they are OURS. 9. OUR car is faster than THEIRS. 10. A friend of YOURS came to see US yesterday. 11. We know THEM very well and both Peter and Nell know US. 12. You can do it without MY help but not without THEIRS. 13. He couldn't lend me the dictionary because it wasn't HIS. 14. She is writing a letter to an old friend of HERS. 15. This suitcase isn't OURS. There's somebody's name on it. 16. This is not MY car. MINE is a 1980 model.17. Could you help me sort out these things? I cannot tell which are YOURS and which are OURS. 18. (YOUR ticket is on the table and where is HERS. 19. She first looked at the title of the story and then at HER. 20. Can I borrow YOUR umbrella? - I'm sorry, it isn't MINE. 21. I'm sorry, but he's busy. Do you mind waiting for HIM? 22. Who told you about it? - A friend of YOURS. 23. Don't ask for help. Do it YOURSELF. 24. Did he enjoy HIMSELF at the party? 25. Jill had lived by HERSELF before HER marriage, but now she was happy with her husband in THEIR new house which HER husband had built HIMSELF