My little sister Mary is a schoolgirl.
1. общий: Is my little sister Mary a schoolgirl?
2. специальный: Who is my little sister Mary?
3. вопрос к подлежащему: Who is a schoolgirl?
4. разделительный: My little sister Mary is a schoolgirl,isn't she?
5. альтернативный: Is my little sister Mary a schoolgirl or a student?
