Răspuns:
a) My grandfather used to be a teacher , but now he is retired .
b) In the past , people didn't use to send emails .
c) Did you use to cry a lot when you were a child ?
d) I used to wear a uniform when I was at school .
e) He used to smoke when he was a teenager .
f) They didn't use to play the piano , but they learnt last year .