Задать 5 разных типов вопроса к предложению: the boys have already made the bird-houses.

Общий:
Have the boys already made the bird-houses?
Специальный:
When did the boys make the bird-houses?
Альтернативный:
Have the boys made  bird-houses or an aviary?
Разделительный:
The boys have already made the bird-houses, haven't they?
Вопрос к подлежащему:
Who has made the bird-houses?