Ask 5 questions to the sentences(спросите 5 вопросы приговоров) he had never been to oxford before.

He had never been to Oxford before, hadn't he? - разделительный
Had he ever been to Oxford before? - общий
Had he never been to Oxford or London before? - альтернативный
Where had he never been before? - специальный
Who had never been to Oxford before? - вопрос к подлежащему