Пять типов вопросовThey were flying over Scattand at 6 p.m. yesterday.

Общий вопрос. Were they flying over Scotland at 6 p.m. yesterday?

Вопрос к подлежащему. Who was flying over Scotland at 6 p.m. yesterday?

Специальный вопрос. When were they flying over Scotland?

Разделительный вопрос. They were flying over Scotland at 6 p.m. yesterday, weren`t they?

Альтернативный вопрос. Were they flying over Scotland at 6 p.m. or at 8 p.m. yesterday?