VII.
1. obedient
2. safety
3. unhealthy
4. carelessly
5. illegal
6. flight
7. strictly
8. signalled
9. prohibitive
10. warning
VIII.
A)
1.T
2.F
3.F
4.T
5.T
6.F
B)
1.The first electric traffic light was invented in 1912
2.The first electric traffic light was invented by Lester Wire
3.The first electric traffic light did have two colour
4.The lights were first installed in Cleveland, Ohio, at the corner of 105th and Euclid Avenue.
5. A buzzer.
6.In 1920, a Detroit police officer named William Potts added the yellow
IX.
1. What can we do to reduce traffic congestion in big cities?

2. How far is it from your hotel to the train station?

3. My house is not very far from it to school.

4. I think it's time to do something to reduce traffic jams in Vietnam.

5. Mai used to go to school on foot when she was in primary school.

6. There are often traffic jams in rush hour in the city center

7. People in the past didn't use to worry about traffic congestion.

8. It is compulsory to wear a helmet when riding a motorbike in Vietnam.