Ответ:
1) Who is this restaurant’s owner?
2) How old are Chris’s children?
3) Is this the umbrella you used?
4) Where is your name at the top of the page?
5) I’ve never met James’s children.
6) How old is Liam and Anna’s son?
7) We don’t know the cause of the problem.
8) I don’t know the answer to this question.
9) Your house’s roof needs repairing.
10) What is the cost of a new washing machine?
11) Our neighbours’ garden is very small.
12) David’s hair is very long.
13) I work on the ground floor of the building.
14) I couldn’t go to my best friend’s party.
15) George is the brother of somebody I know.
16) Have you seen Ben’s parents’ car?
17) What is the name of this street?
18) Do you agree with the government’s policy?
В конструкциях с людьми использован притяжательный падеж (’s или ’), а для неодушевлённых предметов сохранена конструкция с of, если она звучит естественнее.
