题目内容：

People tend to seek happiness.______I've finished with many books, I come to the______that happiness is a choice. We can feel happy or unhappy just by______our thoughts!

I think most people are unhappy because they pay______attention to what's happening outside—they might think they’re too fat or they______their jobs. These______thoughts can put their personalities under pressure. Another important reason may be that they lack the______attitude towards others. If they think they______everything others do for them, they'll never feel happy.

Actually, we all have a sense of happiness inside waiting to______.What we have to do is let it out. Surprisingly, many of us place such a low______on ourselves that we lower the______of everything we do.______we should make the decision today to value ourselves. When someone_______for help, don't refuse Just make sure they know the value of your help.

_____yourself that you can decide whether to be happy on your own. Don't worry about genetics(遗传). ____ your dad is not the happiest man, it doesn't mean you are unhappy. If you choose to be happy, you can _____look on the bright side of life. Take______and be proud of the choices you have made.

Try giving some of your time to a______career. For example, the more time you spend volunteering, the happier you'll be. This is an opportunity to______new experiences, meet new people and learn new______.?

1.A. Unless    B. when    C. Though    D. Before

2.A. force    B. agreement    C. idea    D. conclusion

3.A. changing    B. scanning    C. polishing    D. updating

4.A. little    B. much    C. some    D. less

5.A. appreciate    B. like    C. doubt    D. bate

6.A. bad    B. positive    C. ridiculous    D. meaningful

7.A. thoughtful    B. friendly    C. grateful    D. hopeful

8.A. abandon    B. absorb    C. deserve    D. possess

9.A. give out    B. burst out    C. die down    D. break down

10.A. value    B. purpose    C. spirit    D. decision

11.A. target    B. request    C. function    D. quality

12.A. Or    B. So    C. But    D. As

13.A. searches    B. charges    C. reaches    D. asks

14.A. Retell    B. Inform    C. Remind    D. Persuade

15.A. In case    B. Since    C. Even if    D. whether

16.A. always    B. never    C. still    D. even

17.A. effect    B. care    C. notice    D. responsibility

18.A. constant    B. worthy    C. diverse    D. curious

19.A. gain    B. master    C. analyze    D. improve

20.A. activities    B. adventures    C. skills    D. benefits