完成句子（共5小题，每小题2分，满分10分）
根据所给的汉语内容，用英语完成下列句子。（每空限填一词） 空气污染会更糟糕，除非我们采取行动来保护环境。
The air pollution will be worse, unless we ________ _______ to protect the environment.既然你擅长运动，你可以选择学校的足球俱乐部或乒乓球俱乐部。
Since you are good at doing sports, you can choose _______ the football club _______the table tennis club in our school. 多么可爱的小男孩啊！
_________ __________ the boy is! 我们不知道下一步该做什么，于是请教王老师。
We didn’t know _________ ________ ________next. So we asked Miss Wang for help.吃饭前要洗手，不然很容易就生病的。
Hands _______ _________ _________ before eating or you will easily get sick.
The artist always （表达） his world view in his works．
Although you are young，you can （仍然） make the world more beautiful in your own way．
Our government has made laws to （限制） air and water pollution．
If you go to ，you'd better not miss the Opera House in Sydney．
All children between the age of 5 and 16 in his country must （go to）school．