[A] By car  [B] On foot  [C] By taxi 

18 When is the heavy traffic on most city streets according to the passage? 

[A] During 9:00 a.m and 5:00 p.m from Monday to Friday 

[B] Between 8:00 a.m. and 6:00 p.m from Monday to Friday 

[C] In the period of 9:00 a.m and 5:00 p.m every day 

19 Which of the following is not against the laws in big cities to cross the street?

[A] At any place [B] At the corner [C] At any place without traffic. 

20 Why may people not follow closely the traffic laws in small towns? 

[A] Because the streets are not crowded  

[B] Because people don't like laws 

[C] Because cars take care of people