Question

4.замените существительные с предлогом "of существительными в притяжательном падеже: -the flat of my mother, the children of my sister mary, the letter of my friend, the stories of this writer, the younger daughter of my brother; -the house of his parents, the rights of the women, the children of my sisters, the car of my grandparents, the room of her brothers.

Answer 1

My mother's flat, My sister Mary's children, My friend's letter, this writer's stories, My brither's younger daughter.
His parents' house, the women's rights, my sisters' children, my grandparents' car, her brothers' room

Answer 2

My mother's flat
my sister Mary's children
my friend's letter
this writer's stories
my brother's younger daughter
his parents' house
the women's rights
my sisters' children
my grandparents' car
her brothers' room