drink clean water.

　　5．We can safely draw a conclusion.Living in a small town makes it possible for us to live a long and healthy life.(用名词性从句合并句子)

　　We can safely draw a conclusion that living in a small town makes it possible for us to live a long and healthy life.

　　[妙笔成篇]

　　【参考范文】　

　　Boys and girls，

　　Living in a small town and living in a large city both present benefits of their location.However，I personally prefer to work in a small town after graduating from college.First of all，there is less pollution in a small town，and therefore I can breathe clean air and drink clean water.Secondly，compared with the noisy big cities，a small town can provide us with a quiet environment.Last but not least，with beautiful natural scenery，small towns are much more suitable to live in than urban centers.

　　From what has been mentioned above，we can safely draw a conclusion that living in a small town makes it possible for us to live a long and healthy life.Therefore，I call on young people to choose their jobs in a small town.