语法填空。（共10小题，每小题1分，共10分）
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，在空格处填入一个恰当的词或使用括号中单词的正确形式填空。
When you go to England, you may find the traffic there is different    ours. As a   (foreign), you must be careful in the streets, because the traffic drives    the left. You must look to the right and then the   before you cross a street.
In the morning and in the  when people go to or come back from work, the streets are very busy. Traffic is the most dangerous then.
When you go by bus in England, you have to take care,   . Alwaysremember the traffic moves on the left. You have to take a look first  you will go to the wrong way.
In many English  (city) , there are big buses with two floors. You can sit on the   (two) one. From there you can see the city very  (good).