1.Shanghai has more skycrapers than Jakarta

2. You didn't remember to turn off the T.V, did you ?

3. The countryside suffers less polluted than the city

4. Who don't you go to work by bike ?

5.Tokyo has less billionaires than New York

6. More trees will be planted along this street

7. Overpopulation cause a lot of social problem , doesn't it ?

8. Pollution is the most serious problem , isn't it ?

9. Did a group of foreigners visit the slum last week ?

10. Mr Lam used to live in the country when he was a child