Замените фразы с предлогом of на существительные в притяжательном падеже:

The parents' advice.The son's game.The children's marks.A Helix' axe.An Akunin's novel.The students' life.A boys' school.A women's magazine.A men's club.The England's climate.The moon's surface.The world's history.A two weeks' holidays.The today's news.The country's problems.