Question IV:
1. go 2. go 3. usedn't 4. go 5. being 6. studys
7.play 8. play
Question V:
1.C 2.B 3.A 4.C 5.C 6.B 7. B
D.writing:
1. My father used to live in small village when she was a girl.
2.There are not used to many vehicles on the road before.
3. We used to cycle to school two year ago.
4.Now there are more traffic accidents than before.
5. My mother used to swim when he was a child.