Why does John like reading? - right
What are John’s favourite genres? - right
What genres does Beth like? Why? - right
What does Emma think about romances and poetry? - right
Have books influenced Sally’s life? In what way? - если Вы имеете ввиду "повлияли", то все в норме, а если "влияют", Do books influence Sally’s life?
Why does Sally prefer non-fiction books? Why does Sally prefer reading non-fiction books? - я бы добавила слово "чтение"