1. mark is (their, theirs) cousin. 2. this is our car. it is (our, ours). 3. these are mary's books. they are (her, hers). 4. white is (my, mine) favourite colour. 5. you can't have this book. it is not (your, yours). 6. (her, hers) house is big. 7. is this (your, yours) coat? - no, it is not (my, mine). 8. are these your friends' books? - yes, they are (their, theirs). 9. that is (our, ours) house. it is (our, ours).

1. Mark is (their) cousin. 2. This is our car. It is (ours). 3. These are Mary's books. They are (hers). 4. White is (my)favourite colour. 5. You can't have this book. It is not (yours). 6. (Her) house is big. 7. Is this (your) coat? - No, it is not (mine). 8. Are these your friends' books? - Yes, they are (theirs). 9. That is (our) house. It is (ours).