Пять вопросов к предложению my dad bought a new interesting book for us last week помогите пожалуйста!

Who bought a new interesting book for us last week?My dad bought a new interesting book for us last week, didn't he?Did your dad buy a new interesting book for you last week?Did you dad or mum buy a new interesting book for you last week?What did your dad buy for you last week?