EXERCISE 2 PAGE 72

1.C.Mexico City’s problems ( Too specific)

2.A.Why people are moving to Mexico City (Too specific)

3.B.Mexico City’s air pollution (Too specific)

EXERCISE 3 PAGE 73

1.C.Ads for soap on American TV (Too specific)

2.B.Americans like TV news (Too specific)

3.A.The two kinds of TV stations in the United States (Too specific)

EXERCISE 4 PAGE 75

1.B Redwood tress in California

2.C Forest in Scotland

3.A The importance of forest

EXERCISE 5 PAGE 75

1.Topic:Lightning

Too specific : Derivation of lightning

Too General: Cause of lightning .

2.Topic:Kinds of Clouds

Too Specific : Cirrus Clouds .

Too General : Kinds of Clouds .

EXERCISE 6 PAGE

1.Topic : Source of drinking water.

2.Topic :Unhealthy water.

3.Topic :Ways to use important water.

EXERCISE 7 PAGE 77

1.Topic : The Ability og Galileo Galilei .

2.Topic : The experiment of Galileo Galilei .

3.Topic : The problem of Galileo Galilei .

Main ideas of Paragraphs

The Topic is Supermarkets

1.The kinds of supermarkets .

2.Ways of supermarket employeers serving .

3.The different prices in supermarket with the other stores .

EXERCISE 8 PAGE 78

1.Topic :How to make tea .

In some countries, people drink tea with every meal.

2.Topic: History of Coffee .

Soon there were coffehouses in many europan cities

3.Topic : About the Florida’s orange juice .

Another good snack is apple juice.

EXERCISE 9 PAGE 80

1.B.Clothes can tell a lot a person .

2.A.Light for warm weather are light.

3.B.Today,there are made of manmade cloth.

EXERCISE 10 PAGE 81

1.B.Alchemist lived before the 1700s.

2.C.Robert Boyle helped to start the science of chemistery

3.A.Antoine Lavoisier learned an important fact by doing experiment

The rule of finance

1. So many people ARE waiting outside.

2. The office next door WAS closed all day yesterday.

3. The print on the labels IS so small.

4. The carpet HAS so many stains on it that it NEEDS to be replaced.

5. The Trade Union members’ meeting IS downstairs in the Conference Room.

6. Mr. and Mrs. Taylor HAVE moved in the next door to us.

7. Two cars and a coach WERE involved in the motorway accident.

8. His application form for the new job, which WAS posted yesterday, HAS gone missing.

9. My neighbor PLAYS his music so loud that the walls almost VIBRATE.

10. Ricardo DOES not care whether United or City IS winning.

11. The bouquet of flowers HAS just arrived.

12. He MAKES use of the computer now, and even WRITES reports for the manager with it.