IV. 1. played.
2. go.
3. have learned (hoặc have learnt).
4. going.
5. has lived.
6. play.
V. 1. It's not very far from Quang Chau village to Tan 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.
VI. 1. We used to go school on foot.
2. It's about 80km from Bac Ninh to Ha Long Bay.
3. You must learn about road safety before riding your bike on the road.
4. How long does it take you from Ha Noi to Bac Ninh?
VII. It's about 100 kilometres from Ha Noi to Thanh Hoa City.
