Ex1:
2 Did a group of foreigners visit the slums last week ?
3 The countryside suffers less pollution than the city.
4 Overpopulation causes a lot of social problem in this area , does it ?
5 Shanghai has more skycrapers than Jakarta .
V: choose the correct answer.
1 b
2d
3 a
4 b
5 a
6 c
7c
8c
9 b
10 d
VI : find and correct a mistake in each sentences.
1. c to stay up -> stay up .
2 d are -> were
3 d as -> than
4 a works -> worked
5 b less -> fewer
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