Have you ever been to Hong Kong? When you travel in Hong Kong, you must  1 of the traffic rules, because they are different from those of the interior（内地）of China, and the traffic keeps to  2. Before 3  the street, you must look to the right and then to the left. If the traffic lights turn   4 , the traffic must stop, and people can cross the zebra line. If the traffic lights turn 5  ,the traffic can go, but people  6  cross the road. In the morning and in the evening, when people go to or come from 7  ,the streets are very busy. The traffic is  8  . When you go somewhere by bus in Hong Kong, you must be careful,  9. Always remember the traffic keeps to the left. Have a look first, or you may go to the wrong way. In Hong Kong, there are a lot of big buses 10  two floors. You may sit on the second floor. From there you can watch the city very well.