They worked in the fields in the morning,didn't they?разделительный
Did they work in the fields in the morning? общий
Who worked in the fields in the morning? вопрос к подлежащему
Where did they work in the morning?специальный
When did they work in the fields? специальный
Did they work in the fields in the morning or in the afternoon?альтернативный
What did they do in the morning?специальный