Many people value their time more than anything else in the world. Once time is gone, it can never be replaced. This makes time more valuable than money. Time is precious. Nobody can afford to waste time. Once time has gone by, it will never return. You can never turn the clock back. Time passes very quickly. People say time flies. Time and tide wait for no man.We should therefore make the best use of our time. If you can manage your time well, you will have a successful life. Try using all of your spare time to practise english crazily. Even a few minutes practise while waiting for the bus can be valuable learning time.