17.I am interested in English. 

18.They will fix our roof tomorrow. 

19. Flying cars will be showed to the public when thay finish it.

20.Solar panels will be installed on the roof of our house next week. 

21.Biogas will being used for cooking and heating at this time next month. 

22. Fosel fuels won't be burnt for enery in the future. 

23. Tokyo has fewer billionaires than New York. 

24. Did a group of foreigners visit the slums last week? 

25.The countryside has less pollution than the city. 

26.Overpopulation causes a lot of social problems in this area,  doesn't it? 

27.Shanghai has more skyscrapers than Jakarta. 

28.What about going to the school cafeteria? 

I 

1. How far is it from your house to your school? 

2.How does he go to work? 

3. How long did you walk to the school? 

4. When will we go to the Flower Festival in Da Lat?

IV

1. It's over 20 kilometers from my house to Ha Noi.

2. My brother used to watch TV in his free time last year. 

3. Much biogas will be used in the countryside in the future .

V

1. Performance

2.Cutural

3. Seasonal 

4. Carefulness