IV. 

1. My mother used to live in a small village when she was a girl.

2. There did not use to be more vehicles on the roads.

3. We used to cycle to school 2 years ago.

4. Now there are many traffic accidents.

5. My brother used to go swimming when he was aa child.

VI)

1 . My father used to live in small village when she was a girl

2 . There did not use to be more vehicles than now

3 . We used to cycle to school two years ago

4 . Now there are more traffic accidents than before

5 . My brother used to go swimming when he was a child