A proverb（谚语） says, “Time is money”. But in my opinion, time is even ___16___ precious than money. Why? ___17___when money is spent, we can earn it back. However, when time is ___18___ (go) , it will never return. ____19___ is known to all that the time we can use is limited. Therefore we should make good use ___20___our time to study hard so as to serve our country in ___21___ future. But it is a pity that there are a lot of people___22___ do not realize（意识到） the value（价值） of time. They spend their precious time ____23___ (smoke), drinking and playing.
In a word, we should form the good habit of ___24____ (save) time. Do not put off what can be done today ___25____ tomorrow.
