(4) 
 
　　When you are in England you must be very careful in the streets ____1_____ the traffic drives on the left. Before you cross a street you must look to the right first _____2____ then the left. In the morning and in the evening when people go to or come from ____3____, the streets are very busy. Traffic is most ____4___ (danger) then. 
    
　　When you go by bus in England, you have to be careful, ____5____. Always remember the traffic moves on the left. So you must be careful. _____6____ (have) a look first, or you will go ____7____ wrong way. 
  
　　In many English cities, there are big buses ____8_____ two floors. You can sit on the ______9____ (two) floor. From ____10_____ you can see the city very well. It’s very interesting.

　　參考答案：(4)  

　　1、 because  2、 and  3、 work  4、 dangerous  5、 too 

　　6、 Have  7、 the  8、 with  9、 second  10、 there