4．
阅读短文，根据语境填入合适的单词或用括号中单词的适当形式填空。
Are you allowed to do part-time jobs at your school? Are you allowed (change) the color of your hair?
Across the world there are a lot of school (rule). For example, in Australia, Canada, Japan and the United States, students have to wear school uniforms. In Australia, Japan and the United States, students are allowed to wear earrings.
In Australia, Iran and the United States, students (not allow) to run in the hallways. In Canada and Japan, students are not allowed to arrive late school.
Some schools in Japan and other countries nave rules about hair. For example, students are not allowed to change color of their hair. In the United States, boys can't have (they) hair grow long.
For (safe) at some US schools, students must have a pair of indoor shoes to change into at school every day. This (make) sure students won't fall over on the wet floors and keep the school clean.
Gum chewing is not allowed in many us school buildings, as it is difficult to clean up. And students chew gum in class, probably they will not pay much attention their studies.
