He didn't pass the exam because he didn't study hard.(对划线部分提问)划线部分 because he didn't study hard( ) ( ) he pass the exam?

问题描述:

He didn't pass the exam because he didn't study hard.(对划线部分提问)
划线部分 because he didn't study hard
( ) ( ) he pass the exam?

Why didn't

Why didn't he pass the exam?