Замените существительные с предлогом of существительными в притяжательном падеже: a meeting of students, the flat of my mother-in-law, the rays of the sun, a distance of two miles, the joys of life, the house of his parents, the theatres of moscow, the children of my sister mary, the rights of the women, the name of my friend.
My mother-in-law's flat
The sun's rays
A two miles' distance
The life's joys
His parents' house
Moscow's theatres
My sister Mary's children
The women's rights
My friend's name