помогите пожалуйста номер 4 пожалуйста заранее спасибо

1. Is this your bag? — Is this yours?2. No, but that's my camera. — That's mine.3. There're our shoes. — There're ours.4. That's her mobile. — That's hers.5. We can't find his ticket. — We can't find his.6. Have you got their laptop? — Have you got theirs?