D. Choose the correct item. 15 Their / Theirs house is very modern. 16 Meg has got a new flat. Her / Our flat is on the second floor. 17 Is Ben yours / your brother? 18 Are these books her / hers? 19 This camera isn't mine / my. 20 This little puppy isn't our / ours. 21 Tom and Sarah are my / mine friends. 22 What is his / hers address? 23 What's yours / her phone number? 24 Is this football his / her?