1bob is one of (our, us, ours) best pupils. 2. it isn't (my, mine) bag. i've left (my, me, mine) at home. 3. i've just waxed the floor. don't walk on (itself, it, its) yet. 4. let (they, them, their) read the story again. 5. will you tell (we, us, our) about great britain? 6. is this mary's scarf? no, it is (me, my, mine).7. (your, you, yours) house is not far from (our, us, ours). 8. whose cigarettes are these? they may be (our, ours) cigarettes. oh, yes, they are (our, ours). 9. (our, ours) car is faster than (their, theirs). 10. a friend of (you, yours, your) came to see (we, us, ours) yesterday. 11. we know (they, them, theirs) very well and both peter and nell know (we, us, ours). 12. you can do it without (mine, my, me) help but not without (they, their, theirs). 13. he couldn't lend me the dictionary because it wasn't (he, him, his). 14. she is writing a letter to an old friend of (her, hers, she). 15. this suitcase isn't (us, our, ours). there's somebody's name on it. 16. this is not (my, mine, me) car. (my, mine, me) is a 1980 model.17. could you help me sort out these things? i cannot tell which are (your, you, yours) and which are (we, our, ours). 18. ( you, your, yours) ticket is on the table and where is (her, she, hers p. 19. she first looked at the title of the story and then at (her, she, hers). 20. can i borrow (your, yours, you) umbrella? - i'm sorry, it isn't (me, my, mine). 21. i'm sorry, but he's busy. do you mind waiting for (he, him, his)? 22. who told you about it? - a friend of (you, your, yours). 23. don't ask for help. do it (you, yourself). 24. did he enjoy (him, his, himself) at the party? 25. jill had lived by (itself, herself, her) before (her, hers) marriage, but now she was happy with her husband in (their, theirs) new house which (her, hers) husband had built (him, himself, itself).