根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。
Somebody says, “Time is money.” But I think time is 1 important than money. Why do I think so? Because when money is over, we can get it back. But when time is 2, it'll never be 3. That's 4 we shouldn't waste time.
It goes with saying that the 5 is usually limited（有限的）. Even a second（秒） is very important. We should make full use of our time to do 6 useful.
But a lot of people do not know the importance of time. It is a pity. They spend their limited time smoking, drinking, sleeping and 7. They do not know that wasting time means wasting part of their own 8.
In a word, we should save time. We shouldn't 9 today's work for tomorrow. Please remember that we have 10 time to waste.
