1. — Can you take good care of y _____ while I'm not at home? — Of course, we can.
2. — Does this piece of m _____sound nice?
     — Yes. It's wonderful.
3. We can play tricks (恶作剧) on friends on April 1, but they will not be a _____ with us.
4. India has the second l _____ population in the world.
5. Yesterday the teacher told us the earth r _____ around the sun.
6. I didn't have my breakfast this morning. Now I feel so h _____ that I want to do nothing.
7. The Yellow River, the world's f _____  longest river, has watered some of the oldest farms on Earth.
8. When I told them the funny jokes, they couldn't help l_____ .
9. Some scientists said,"If you often go running alone in the morning, it would become b _____ for your
    brain, you'd better run with your friends."
10.The plane flew higher and higher. At last it d _____ in the sky.
11.Now computers are w _____  used in our office.
12.The Red Army men walked a long way and their shoes were all w _____ out.
13. Li Ming can find many new things that we don't know on the Web, and he'd like to s _____  them
      with all of us.
14.What should you do when you suddenly hear shouts of "fire" and smell smoke t _____ the door?

1. Now we can buy a u_______ car for as little as ￥10 thousand in China.
2. The seasons of the year in England and the USA are n _______ the same.
3. We can d _______ any information by using the computer.
4. Tina is a little w_______ in science, but she is good at Chinese and English.
5. Mary, would you please tell me your new a_______ so that I can write to you?
6. — Does this piece of m _______ sound nice? 
    — Yes, It's wonderful!
7. May 12th is the International N_______ Day.
8. The more dirty water the factory pours into the river, the w_______ the environment nearby will be.
9. Victor is a b_______boy and he learns quickly.
10. Please c______ those exercises down from the blackboard so that you can do them after school.