My parents are reading a book now. Сделать 5 типов вопросов (Отрицание, общий вопрос, специальный, альтарнативный, разделительный)

Aren't my parents reading a book now?Are my parents reading a book now?What are my parents reading now?Are my parents reading a book or a magazine now?My parents are reading a book now,aren't they?