Her books are based on real life,aren’t they? Разделительный
What is based on real life? Вопрос к подлежащему
Are her books based on real life? Общий
Whose books are based on real life? Специальный
Are her or his books based on real life? Альтернативный
Her books are based on real life,aren’t they? Разделительный
What is based on real life? Вопрос к подлежащему
Are her books based on real life? Общий
Whose books are based on real life? Специальный
Are her or his books based on real life? Альтернативный