A proverb says, “Time is money”. But in my opinion, time is even     precious than money. Why?      when money is spent, we can earn it back. However, when time is gone, it will      return. It is known to all   the time we can use is limited. Therefore we should make full use of our time to study hard so as to serve our country in          future. But it is a pity that there are a lot of people who do not realize the value     time. They spend their precious time smoking, drinking     playing.
In a word, we should form the good habit of saving time. Do not put off    can be done today till tomorrow.