1. They didn't use to play tennis twice a week.
Did they use to play tennis twice a week?
2. I didn't use to go to the gym three times a week.
Did you go to the gym three times a week?
3. Tennis didn't use to be a sport for rich people only.
Did tennis use to be a sport for rich people only?
4. My father didn't use to take me to see soccer games on Saturdays.
Did your father use to take you to see soccer games on Saturdays?
5. He didn't to buy a new tennis racket.
Did he use to buy a new tennis racket?