1. Does my sister-in-law work for a well-know foreign company? - общий
2. Where does my sister-in-law work? - специальный
3. Does my or her sister-in-law work for a well-know foreign company? - альтернативный
4. My sister-in-law works for a well-know foreign company, doesn't she? - разделительный
5. Who works for a well-know foreign company? - специальный вопрос к подлежащему