阅读填空 根据下列短文内容，在文中空格处填上一个恰当的词，使短文通顺。
Someone says, “Time is money,” but I think time is even more ___ than money. Why?
______ when money is spent, we can get it back.
____ , when time is gone, it’ll never return. That’s
______ we mustn’t waste time. It’s sure that the
_______ is usually limited. Even a second is very important. We should make full use
_____ our time to do something useful. But some people don’t know the importance of time. They
______ their limited time smoking, drinking and playing. They do not know that wasting time means wasting part of their own
____ .
In____ word, we should save time, we
______ leave today’s work for tomorrow. Remember we have no time to lose.