did you buy
What did you buy?
Pourquoi as-tu acheté ce dictionnaire qui coûte cher ?
Why did you buy that expensive dictionary?
Dans quel but l'as-tu acheté ?
What did you buy it for?
Quand as-tu acheté ce violoncelle ?
When did you buy this cello?
Did you buy this book?
As-tu acheté les médicaments ?
Did you buy the medication?
Where did you buy all that?
What book did you buy?
Who did you buy this for?
Où as-tu acheté cette vaisselle ?
Where did you buy this tableware?