Общий
1) Will they have finished their report by Tuesday?
2) Will he have been studying for 3 hours?
специальный
1) By what time will they have finished their report?
2) How long will he have been studying?
альтернативный
1) Will they have finished their report by Tuesday or
by Friday?
2) Will he have been studying for 3 or 4 hours?
разделительный
1) They will have finished their report by Tuesday,
won't they?
2) He will have been studying for 3 hours, won't he?
вопрос к
подлежащему
1) Who will have finished their report by Tuesday?
2) Who will have been studying for 3 hours?