Ответ:

6. The restaurant used to be a ciname in the 1960s.

7. Did your sister use to eat meat, or has she always been a vegetarian.

8. I didn't use to be interested in athletics, but now I always watch it.

9. Did you use to have a motorbike when you were a student?

10. Telegrams used to be the quickest way to send important messages.