Ex1: 1. My family used to go on holiday at the seaside in the summer.
2. How long does it take you from Ha Noi to Hai Phong?
3. He used to go to school on foot.
4. It is about 30km from my town to Sam Son beach.
5. Now there are more traffic accidents than there used to be 20 years ago.
6. Did your father use to go by bus to work?
7. Traffic jam is one of the most common issues in big cities in the world .
8. People should use public transports to reduce the number of private vehicles on the road.
9. There used to be a factory in the town centre but it has been moved to the suburbs.
10. You must learn about the road safety before riding your bike on the road.
Ex2: 1. It is about 2km from my house to school.
2. Now there are more cars on the roads than there used to be.
3. If you drive too fast, you'll have an accident.
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