They are working in another office at the moment, aren't they? - разделительный Are they working in another office at the moment? - общий Are they or we working in another office at the moment? - альтернативный Who is working in another office at the moment? - специальный вопрос к подлежащему Where are they working in another office at the moment? - специальный
Are they working in another office at the moment? - общий
Are they or we working in another office at the moment? - альтернативный
Who is working in another office at the moment? - специальный вопрос к подлежащему
Where are they working in another office at the moment? - специальный