1Whose house is this? - It is E and Arthur's house.
2Whose computer is this? - It is Rob's computer
3 Whose dogs are these? - They are family's dogs.
4 Whose car is this? - It is James's car.
5Those books are these? They are Mark's books
6 Whose mobile phone is this? It is Rosy's mobile phone
7 Whose friends are these? They are M and R's friends
8 Whose horses are these? - They are the grandparents' horses.