5 типов вопросов: The boy had to give up his studies

Question

5 типов вопросов:
The boy had to give up his studies

Answer 1

The boy had to give up his studies
Did the boy have to give up his studies?
Why did the boy have to give up his studies?
Did the boy have to give up his studies or his hobby?
The boy had to give up his studies, didn't he?
Who  had to give up his studies?