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?