题目

When you are in England, you must be very careful in the street because the traffic drives ____1_  .   2_  you cross the street, you must look to the right first and then the left.If the traffic lights（交通灯）_  3_ the traffic must stop. Then the people __4__can cross the road carefully. If the traffic lights are green, the traffic can__5__. People on foot mustn’t cross. In the morning and in the evening, when people go to or come from work, the streets are very_  6_  . The traffic is the most dangerous then.When you go by bus in England, you have to be careful, too. Always __7Did you decide _____ a bicycle to school?A. ride B. by C. to ride D. riding