Общий - Does my friend go to the library every Wednesday?
Специальный - When does my friend go to the library? / Where does my friend go every Wednesday?
Вопрос к подлежащему - Who goes to the library every Wednesday?
Альтернативный - Does my friend go to the library or to the swimming pool every Wednesday?
Разделительный - My friend goes to the library every Wednesday, doesn't he?