15. Choose the correct form of the pronouns in brackets.
1. It may be (our, ours) dictionaries. 2. He hasn’t read a line of (your, yours). How can he
criticize? 3. His composition is much more interesting than (your, yours) or (my, mine). 4.
(Their, theirs) knowledge of the subject isn’t better than (our, ours). 5. I’m afraid they will
take (her, hers) advice not (your, yours). 6. All our clothes were very dirty, especially (my,
mine). 7. Will you help me to sort out the things? I cannot tell which are (your, yours) and
which are (my, mine). 8. This is (your, yours) copy-book, but where is (my, mine)? 9. My
sister likes much sugar in (her, hers) tea, but I like little in (my, mine). 10. The friend of
(their, theirs) is very intelligent.