Answer:
1. I bought a new video game. It is mine. 2. The jacket belongs to David. The jacket is his. 3. The cats belong to Mona and Sheila. The cats were theirs. 4. This telephone number belongs to Rupa. It is hers. 5. You and I live in this house. The house is ours. 6. My dog is bigger than your dog. The larger dog is mine.