Поставить вопросы общие специальные или альтернативные нудно более 10 his sisters work at a new factory

Do his sisters work at the new factory?
Who works at the new factory?
Where do his sisters work?
Whose sisters work at the new factory?
What do his sisters do at the new factory?
Do his sisters work at the new factory or at the post office?
His sisters work at the factory, don't they?