1 I used to wear glasses, but now I have contact lenses.
2 Dad used to drive, but now he’s too old to have a car.
3 Did you use to eat meat or have you always been a vegetarian? (после did глагол всегда в 1 форме, что значит, что used превращается в use)
4 John and Petra used to get on well, but now they don’t speak to each other.
5 I didn't use to earn much money, but now I do. (после did глагол всегда в 1 форме, что значит, что used превращается в use)