题目内容：

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空（每空不多于2个单词）。

When you travel in Hong Kong, you must be careful of the traffic rules, 1.the traffic keeps to the left. 2.crossing the street, you must look to the right and then to the3.. If the traffic lights are red, the traffic must stop, and people can go4.（cross） the road.5.the traffic lights turn green, the traffic can go, and people mustn’t cross the road.

In the morning and in the evening, when people go to or come from work, the streets are very busy. The traffic is really 6.（danger）.

When you go somewhere by bus in Hong Kong, you have 7.（be） careful too. Always remember the traffic keeps to the left.8.（have） a look first, or you may go the wrong way. In Hong Kong, there are a lot of big 9.（bus） with two floors. You’d better sit on the second floor. From there you can watch the city very10.（good）.