Pls help
Use the possessive form.

The brother of their sister; the wife of the man; the cousin of his daughter; the house of her uncle; the husband of the goddaughter; the children of this widow; the dog of their grandfather; the glasses of our great-grandmother; the parks of the town; the poems of Lesya Ukrayinka; the desk of their teacher; the books of her group-mates; the address of our friends; the flat of Sally; the feet of the sportsman; the handbag of his mother-in-law.