1. Their house is much bigger than ours . (they / we)
2. Is this book yours or mine ? (you / I)
3. How long have they been waiting for us ? (they / we)
4. Don’t blame youself ; it wasn’t your mistake. (you / it
/ you)
5. He was very angry with me when I broke his
camera. (he / I / I / he)
6. It’s a coincidence that his birthday is on the same day as hers
. (it / he / her)