VIII.

1. cities

2. problem

3. discourage

4. expensive

5. transport

6. pollution

7. example

8. trains

IX.

1. Traffic rules should be obeyed strictly by road users.

2. Can I travell to Korea by car?

3.

4. My family used to be very poor in the past but we have 100

milions USD now.

5. My father is a carefully driver.

6. It is 100 km from Ha Noi to Hai Phong.

7. If you aren't careful, you'll have an accident.

8. Hung used to go to his homeland some years ago, but now he

drives his car.

X.

1. I didn't use to go to the supermarket every Sunday last year.

2. In the past, her hair used to be shorter than that now.

3. I used to collect dolls before I'm in secondary school.