A. 1. When my grandparents were young people they used to go to the disco. 

2. In prehistoric times people used to eat raw meat .

3. In the 18th century they used to fight in duels .

4. Before airplanes were invented people used to fly in ballons .

5. When there were no telephones people used to send letters more often .

B. 1. When I was two or three years old I got used to draw on the walls .

2. Later, when I was five, I was already used to draw in albums .

3. When I went to school I quickly got used to read and write.

4. A couple of years ago I still wasn't used to iron my clothes .

5. And now I think I am used to do everything about the house .