问题补充：
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 that the traffic moves on the left. So you must be careful. 6. (have) a look first, or else 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. 1 because 2 and 3 work4 dangerous 5 too
答案：
(答案→)1 because 2 and 3 work4 dangerous 5 too
解析：可联系答.案.网客服索取。
