Ex 8

1.We used to go to school on foot

2.It is about 30 km from my town to Ha Long Bay

3.My family used to go on holiday in seaside in summer

4.How long does it take you from Ha Nội to Sa Pa

5.There were used to be a factory in the town center but it moved to the suburbs

6.You must learn about road safety before riding your bike in the road

Ex9: 

1.Did you used to go to the beach when you lived in Nha Trang ?

2.Mr and Mrs. Smith are travelling to Ha Noi now

3.Van used to have a motorbike

4.My father usually drives car to work