TOEFL essay hints:Topic 19,20,21

19. Should governments spend more money on improving roads and highways, or should governments spend more money on improving public transportation (buses, trains, subways)? Why? Use specific reasons and details to develop your essay.
More money on improving roads & highways
1) Road is the prerequisite of buses and trains
2) My country's (Iran, China, Japan, Pakistan etc.) current situation: very bad roads
3) Road & Highway improve economics

20. It is better for children to grow up in the countryside than in a big city. Do you agree or disagree? Use specific reasons and examples to develop your essay.
As #9

21. In general, people are living longer now. Discuss the causes of this phenomenon. Use specific reasons and details to develop your essay.
1) Medical technique develop
2) Living envirom?nent becomes better 3) Food nutrition