Do they go to school every day? Общий вопрос
Who goes to school every day? They go. Вопрос к подлежащему
Do they go to school or university every day? Альтернативный
Where do they go every day? Специальный вопрос
They go to school every day, don't they? Разделительный вопрос
Whom does she always help? Специальный
Does she always help her mother? Общий
Who always helps her mother? К подлежащему
She always helps her mother, doesn't she? Разделительный
She always helps her mother or best friend? Альтернативный