阅读下面短文，从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。

What's time? We can't 1 it and we can't catch hold of it. But we can feel it pass by. Time is 2 with us in our life When we wash our faces, time 3 away in front of us. And when we play, time goes away 4 .

Time is fair to every one of us. If we make the 5 use of it, time will give us a lot, 6 we will miss a lot. The best time will not be found again. Today time is becoming more and more valuable (有价值的) to us. We often 7 people say, “Time is money. Time is life.” It warns us not to waste any time.

My friend, we must keep in mind, “Time and tide wait for no man.” Now we are still 8 . It is the best time for us to learn 9 . We must make good use of every 10 and be the master of time.