帮忙翻译以下句子

1.early in the morning of October the 30th, a skyscraper located in the downtown regin caught fire.
2.The firefighters came immediately.
3.The fire sprawled rapidly become of the wind.
4.The fire lasted about 2 hours.
5.This three-storied building was ruined.
6.Why the youngsters should study hard?
7.The society changes fast with the development of science and technology.
8.Without learning we can not catch up with the epoch.
9.Only armed by knowledge can we make more effort to our county.
10.Knowledge plays an important role in our life and work.