They swim in the swimming pool on Sunday,don’t they? Разделительный
Do they swim in the swimming pool on Sunday? Общий
Who swims in the swimming pool on Sunday? Вопрос к подлежащему
Where do they swim on Sunday? Специальный
When do they swim in the swimming pool? Специальный
Do they swim in the swimming pool on Sunday or on Monday? Альтернативный