题目内容：

We are often warned by our teacher not to waste precious time, because time _____ will never return. I think it quite _____. What does time look like? Nobody knows for we can’t see it or ____ it and no amount of money can ____ it. Time is abstract, so we have to ____ about it.

Time passes very quickly. Some students say they don’t have ____ time to review all their lessons. It is because they don’t know how to make ____ of their time. They waste it in going to theatres, cinemas and parks, and doing ____ things. Why do we study every day? Why do we ____? Why do most people would rather ____ buses instead of walking? The ____ is very simple. We wish to save time because time is ____.

Today we are living in the 21st century. We look upon time as ____. When a person dies, his life ___. Since life is short, we must ____ our time and energy to our study so that we may be able to ____ the people well in the future. Laziness is the ____ of time, for it does not only bring us failure but also ____ us other harm. If it is necessary for us to do our work today, let us do it today and not ____ it until tomorrow. Remember that time is much more ____ than money.

1.A. lost   B. found   C. expected    D. made

2.A. false   B. true    C. abstract    D. valuable

3.A. get   B. have    C. see     D. touch

4.A. find   B. buy    C. sense     D. realize

5.A. worry  B. discuss   C. advise    D. think

6.A. enough      B. little    C. valuable    D. useful

7.A. up       B. light    C. use     D. fun

8.A. other       B. another   C. some     D. any

9.A. drink       B. eat    C. think     D. work

10.A. borrow      B. get    C. make     D. take

11.A. question      B. answer   C. problem    D. method

12.A. valueless      B. precious   C. endless    D. fast

13.A. money   B. life    C. gold     D. water

14.A. comes to      B. begins   C. ends     D. lives

15.A. waste   B. devote   C. put     D. value

16.A. ask       B. remember   C. save     D. serve

17.A. friend   B. maker   C. mother    D. thief

18.A. brings   B. does    C. takes     D. sends

19.A. leave   B. forget   C. remain    D. stay

20.A. useful   B. cheap    C. heavy    D. valuable