When you are in England, you must be very careful in the streets 1 the traffic drives on the left. When you cross a street, you must look to the 2 first and then left. In the morning and in the evening when people go to or come from work, the streets are very 3 . Traffic is the most dangerous(危险的)then. When you go by bus in England, you have to 4 , too. Always remember the traffic moves on the left. So you must be careful. Have a look first, 5 you will go the wrong way.
