Choose the right form of the pronouns: 1. It may be ( our, ours ) books. 2. He has not read a line of ( yours, your ). How can he criticise ( your, Yours ) poems? 3. His composition is much more interesting then ( yours, your ) or ( my, mine ).4.( Their, theirs ) knowledge of the subject is not much superior to (our, ours ) . 5. I’m afraid they will take (her, hers ) advice not ( your, yours ).6. This is ( your, yours ) notebook, but where is ( my, mine )? Rewrite the sentences, using plural forms: 1. This is my pen and that is your pensil. 2. This is his desk and that is hers. 3. This is my book and that is theirs. 4. Is this my book? 5. Is that house yours? That house is mine.