Общий: Is he to come at 5 o'clock?
Разделительный: He is to come at 5 o'clock, isn't he?
Альтерантивный: Is he to come at 5 or 6 o'clock?
Is he or she to come at 5 o'clock?
Is he to come or to leave at 5 o'clock?
Специальный: What time is he to come?
What is he to do at 5 o'clock?
К подлежащему: Who is to come at 5 o'clock?
