2.
完形填空。
When you are 1 England, you must be very 2 in the street because the traffic goes on the 3 . You must look 4 first and then left.5 you can cross the street. If the traffic lights are6 the traffic must stop. Then the people on foot can cross the road. In many English 7 there are big buses with two floors. You can sit8 the second floor and see the city. It's very interesting.