Помогите, пожалуйста

Замените фразы с предлогом of на существительные в притяжательном падеже:

1.The advice of my parents.

2 The games of her sons

3 The marks of her childrrn

4. A ax from Helix

5. A novel by Akunin.

6 The life of students

7 A school for boys

8. A magazine for women.

9. A club for men

10. The climate of England

11 The surface of he moon

12. The history of  the world

13. A holiday for two weeks

14. The news of today,

15 The problems of the country.