[解析]
When I was a child, I hoped to live in the city. IthinkI would be happy there. Now I am living in a city,
but I miss my home in∧countryside. There the air is cleanorthe mountains are green. Unfortunately,onthe
development of industrialization, the environment has been polluted. Lots of studies have been shown that global
warming has already become a veryseriouslyproblem. Theairswe breathe in is getting dirtier and dirtier.Much
rare animals are dying out. We mustfoundways to protectyourenvironment. If we fail to do so, we'll live to regret
it.
1. think→ thought 考查时态. 前面的时间状语是"When I was a child" 所以这里应该用一般过去时,表示"过去认为".
2. countryside前面加 the 考查冠词. 这里countryside是特指,故用定冠词the
3. or →and考查连词.句意为:那里山绿并且空气新鲜,所以 前后句为并列关系,故用连词and.
4. on →with 考查介词搭配.短语with the development of随着……的发展.
5.去掉 shown前面的 been 考查语态.句意:许多研究表明.主语与动词为主动关系,这里不需要用被动语态.
6. seriously →serious 考查形容词.修饰名词,前面用形容词修饰.
7. airs →air考查名词单复数. 名词air为不可数名词,所以不能用airs.
8. Much→ Many 考查名词修饰语.名词animal为可数名词,故用many修饰.
9. found →find 考查动词形式.情态动词must后接动词原形.
10. your →our 考查人称代词.句意:我们必须找到方法来保护我们的地球.这里应当是保护我们的环境.所以用our.