1. Who met his friends in the street? ( Вопрос к подлежащему. )
2. Did he meet his friends in the street? ( Общий вопрос. )
3. Where did he meet his friends? ( Специальный вопрос. )
4. Yesterday he met his friends in the street , didn't he? ( Разделительный вопрос. )
5. Did he meet his friends in the street yesterday or two hours before? ( Альтернатиный вопрос. )