1 . When you are in England, you must be very careful in the streets because the traffic drives on the left. Before you cross a street, you must look at the right first and then left. In the morning and in the evening when people go to or come from work, the streets are very busy. Traffic is the most dangerous then. When you drive a car in England, you have to be careful, too. Always remember the traffic moves on the left. So you must be careful. Have a look first, or you will go the wrong way. In many English cities, there are big buses with two floors (层). You can sit on the second floor. From there you can see the city well. It’s very interesting.   

根据短文内容，按要求完成下列各题。
1. Which side does the traffic move in England?
_________________________.
2. Why are the streets become very busy in the morning and in the evening?
_________________________.
3. What are the big buses like in many English city?
_________________________.
4. Always remember the traffic moves on the left.( 改为同义句，每空一词)
________________ the traffic moves on the left.
5. In this passage, the underlined word there refers to (指) _______.