请给我一些关于时间的英语演讲稿请是限时在3分钟内的,急用!

We are often told,"Don't waste time because time lost will never return." It is quite right,I think.
Time passes very quickly.Some pupils say they do not have enough time to prepare all their lessons.They are not right.Why?Because they do not know how to make use of their time; they waste it in going to Internet bars,playing games,and doing other useless things.Just think of this:Why do most people prefer taking buses to walking?The answer is very simple:They wish to save time because time is short,time is precious.
Today we are living in the 21th century.We know that time is life.Since life is very short,we must give our time to our studies so that we'll be able to serve our country and society.Let us do our work today and never leave it till tomorrow.Always remember that time is more valuable than money.