1. There is a train leaving for Lao Cai at 5 o'clock every morning.
2. It is about 300 km from Ho Chi Minh City to Phu Quoc island.
3. Can we travel to Sa Pa by air ?
4. If you don't be careful, you'll fall off your bicycle.
5. Our teacher drives carefully.
6. Mr. Tam used to go to work by car some years ago, but now he cycles.
7. Traffic rules should be obeyed strictly by road users.
8. My mother used to wash clothes by hands in the past, but she no longer does it now.
