I.
1. Mr Thanh didn't use to travel to Korea.
2. It is about 250km from HCM City to Da NAng.
3. My hometown used to be a small village.
4. How long did it take from Ha Noi to Singapore in the past?
5. Did Lana use to go on foot to school or by car?
6. He used to be a good student but now he is poor.
II.
1. My father always drives carefully.
2. It is about 100km from Ha Noi to Hai Phong.
3. If you aren't careful, you'll have an accident.
4. Hung used to go to his homeland by train some years ago, but now he drives his car.
5. Traffic rules should be obeyed strictly.
6. Can we travel to Korea by car?
7. There are buses leaving for Hai Phong every 15 minutes from 6 a.m to 10 p.m.
8. My family used to be very poor in the past, but we have 100 million USD now.