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He is to come at 5 o'clock

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?