Помогите составить 2 типа вопросов по английскому языку на вопрос They found two ruined buildings

They found two ruined buildings.Общий вопрос:Did they find two ruined buildings?Специальный вопрос:What did they find?Вопрос к подлежащему:Who found two ruined buildings?Альтернативный вопрос:Did they find two or three ruined buildings?Разделительный вопрос:They found two ruined buildings, didn't they?Типы вопросов выберите сами.

How many buildings did they find?

What did they find?