根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。

Some colors make us feel calm and peaceful. Blue is one of these colors. Wearing blue clothes or sleeping in a blue 　1.　 is good for the mind and body. Blue can 　2.　 mean sadness. Someone who is feeling sad may say “I’m feeling blue.” Some colors make us feel happy. Orange is such a happy color. It can bring you happiness and cheer you up when you are sad. If you feel 　3.　 or weak, please wear colors that make you feel energetic. Green can give you energy, because it 　4.　 new life. And you can also wear red. That makes it easier 　5.　 you to take action.

No air means death. There is air around us  36  we can’t see it. Air is everywhere and it gives   37  　to every living thing. We can’t live  38   it. Bad air makes people ill. We must have fresh air to keep us  39  .

In the city there are a lot of people and there are too many  40   running on the road. The gas which the car sends out is made up of(组成) bad gases. Every day we  41   it in and        out. This makes us feel sick. There are many  42  , too. From the chimneys(烟囱) of these factories, we  43   get the smoke in black color. This kind of smoke is  44  to our health. So in order to keep us healthy, we have to go out to the   45   to breathe more fresh air. Or we can go up hills to get more fresh air.

1.A. because            B. though               C. so

2.A. life               B. name      　         C. pleasure

3.A. with               B. without          C. below

4.A. quiet              B. tall       　    C. healthy

5.A. dogs               B. trains      　  C. cars

6.A. breathe            B. draw       　    C. bring

7.A. animals            B. people           C. factories

8.A. usually  　　      B. never     　         C. seldom

9.A. helpful     　　   B. dangerous        C. necessary

10.A. office    　      B. city             C. Countryside