1. Are they having lunch in the kitchen now? - общий 2. Who is having lunch in the kitchen now? - вопрос к подлежащему 3. Where are they having lunch now? - специальный 4. Are they having lunch in the kitchen or in the dining room now? - альтернативный 5. They are having lunch in the kitchen now, aren't they? - разделительный
2. Who is having lunch in the kitchen now? - вопрос к подлежащему
3. Where are they having lunch now? - специальный
4. Are they having lunch in the kitchen or in the dining room now? - альтернативный
5. They are having lunch in the kitchen now, aren't they? - разделительный