IX. Change the given groups of words as in the model

Model: the room of my sister - my sister's room
the friends of my sisters - my sisters' friends.

1. the brother of my mother; 2. the friend of my sister; 3. the husband of his daughter; 4. the house of my parents; 5. the table of my father; 6. the work of my mother; 7. the notebook of this student; 8. the books of these students; 9. the sister of my friend; 10. the friend of our cousin; 11. the photo of my grandfather; 12. the room of Pete; 13. the son of her brother; 14. the daughter of Ann; 15. the sister of my mother.

my mother’s brothermy sister’s friendhis daughter’s husbandmy parents’ housemy father’s tablemy mother’s workthis student’s notebookthese students’ booksmy friend’s sisterour cousin’s friendmy grandfather’s photoPete’s roomher brother’s sonAnn’s daughter my mother’s sister