Решение:
- My grandfather used to solve puzzles very quickly.
- We used to go to an island in the summer.
- My mum didn't use to have a mobile when she was a girl.
- Did you use to borrow your best friend's clothes? 'Yes, I used to.'
- I don't listen to hip hop now, but I used to like it.
- You and Gina didn't use to speak English well.
- Did they use to live in Scotland? 'No, they didn't use to.'
- There used to be a playground next to the hospital.
Ответ: used to solve; used to go; didn't use to have; Did you use to borrow, used to; used to like; didn't use to speak; Did they use to live, didn't use to; used to be.