III
1. We used to go to school on foot.
2. It's about 30km from my town to Ha Long Bay.
3. My family used to go on holiday to the seaside in summer.
4. How long does it take you from Ha Noi to Sa Pa?
5. There used to be a factory in the town centre but it has been moved to the suburbs.
6. You must learn about road safety before riding your bike on the road.
IV
1. It's not very far from Quang Chau village to Tan Chau village.
-> It's not very far from Tan Chau village to Quang Chau village.
2. My father used to work by motorbike.
3. How far is it from your house to school?
4. I didn't use to go out on Sundays.
5. Walk across the street at the zebra crossing.
