Общий - Did our mother buy a new bag last week?
Специальный - What did our mother buy last week? When did our mother buy a new bag?
Вопрос к подлежащему - Who bought a new bag last week?
Альтернативный - Did our mother buy a new bag or a hat last week?
Разделительный - Our mother bought a new bag last week, didn't she?