1. I'm great, thanks. How about you?
2.Yes I had a good time
3.I was relaxing, I did my homework, and watched a movie.
4. when I was six I used to dance like an Egyptian
5. No I didn't I prefer to stay at home.
Bob <u>enjoyed</u> his birthday party very much
1. <span>Every year world industry pollutes the atmosphere with about 1000 million tons of dust and other harmful substances, doesn't it?
2. </span><span>In 1952 many people died in London as a result of air pollution, didn't they?
3. Do many cities suffer from smog or acid rains?
4. Are vast forests cut and burning fire or kept in the safest environment?
5. Who lived in harmony with environment for thouthands of years?
6. Are there</span><span> many consequences of damaging the environmental?
7. What must we do to protect the water?
8. What came from coal fires in people's homes?
9. Did man's economic activities begin to produce negative effect on the biosphere?
10. What has a major impact on the world climate and is generally agreed?</span>
A. If my brother fail his exam, he can try it again
b. If we miss the train, we can catch the next one
c. If our team lose the game, our trainer will be upset.
d. If children go near Tom's dog, it'll bite them.
1-a, 2-a, 3-a, 4-a, 5-a, 6-an, 7-a, 8-a, 9-an, 10-a, 11-a, 12-a, 13-an, 14-a, 15-a, 16-a, 17-a, 18-a