Step-by-step explanation:
Question 2.
i. This is Peter's book.
ii. The room of the children is upstairs.
(alternative: the children's room is upstairs)
iii. Susan and Steve's school is old.
iv. Men's shoes are on the second floor.
My parents' car was not expensive.
Charles' CD player is new.
This is the boy's bike.
These are the boys' pencils.
Question 3.
1) The books of his grandchildren. – The grandchildren's books.
2) The name of her sister-in-law. – Her sister-in-law's name.
3) The surname of Halen and Peter. Halen and Peter's surname.
4) The parents of John. John's parents.
5) The brother of this boy. This boy's brother
6) The children of these women. These women's children
7) The toys of the twins. The twins' toys.
I hope these help