题目内容：

It is well-known that everyone has his own dream as well as his own future. But do you know what future really is? I have to say that future is now. That is to say, we must treasure every minute now. If we want to have a bright future, we should know how important time is and use it well.

There is an old English saying: “Gain time, gain life.” Then what’s time? Time is something that we can’t see or touch, but we can feel it passing by. Time is always with us. When we are at table, time passes; when we play, time goes by unnoticeable. We always say “Time is money,” but time is even more precious than money, because when money is spent, we can earn it back. But if time is gone, it well never return. So some of us even say time is priceless.

We should always remember: Future is now. For us students, we should try our best to work hard in order to create a great future of our own. We should make the best use of every hour and be the master of today. We should do everything before us as well as possible. And never put off what can be done today till tomorrow.

As we all know, “Time and tide wait for no man.” If you waste today, you will regret tomorrow. So from now on, work hard. Tomorrow will be better, and your future will be brighter. Remember: “No pains, no gains.” Today’s hard work is the cause of tomorrow’s harvest.

根据文章内容，补全下面句子，每空一词。

1.If we want to have a bright future, we should know the _____ of time and make every minute useful.

2.Time is money, but time is even more ______ than money.

3.When money is _____, we can earn it back.

4.Time is priceless. _____ time will return no more.

5.As students, we should never put off what can be done today till tomorrow and we should try our _____ to do everything well.