Задайте вопросы к предложению. They cooked meat for their parents for dinner yesterday.

Общий вопрос. Did they cook meat for their parents for dinner yesterday? 

Специальный вопрос. What did they cook for their parents for dinner yesterday?

Разделительный вопрос. They cooked meat for their parents for dinner yesterday, didn`t they?

Вопрос к подлежащему. Who cooked meat for their parents for dinner yesterday?

Альтернативный вопрос. Did they cook meat for their parents yesterday or two days ago?