По огите . составить все типы вопросов кпредложению they try to explain

Do they try to explain общий
What do they do специальный
Who tries to explain к подлежащему
They try to explain, don't they разделительный
Do they or your friends try to explain  альтернативный

1 Do they try to explain?
2 Who tries to explain?
3 Do they try or want to explain?
4 They try to explain, don't they?