1. In big cities, life can become very difficult and unpleasant, _____cann't it_______?

2. The world will soon become overpopulated, ____won't it________?

3. You haven’t gone to Rio de Janeiro, ______have you______?

4. They didn’t like the film, _____did They _______?

5. Jeju Island looks very peaceful, _____doesn't it_______?

6. We don’t have to go yet, ____do we________?

7. You don’t like pollution, ___do you_________?

8. I think a megacity is a very large city with big population, ________isn't it____?

9. You won’t tell anyone, _____will you_______?

10. The number of English speakers is increasing very quickly, _____isn't it_______?

11. You need an English – Vietnamese dictionary, ____doesn't you___?

12. You have never watched any films made in Bollywood, __have you?

13. You’re waiting for your letter, _____aren't you?

14. We had a good time, ______didn't we?

15. Some people commit crime when they have no money and no food, _doesn't they_______?

16. You enjoy living in a peaceful neighbourhood, __don't you______?

17. It’s hot today, ___isn't it_?

18. The factory will bring more jobs to local people, _won't it___?

19. You forgot to bring your textbooks this morning, ___didn't you___?

20. The idea can change the solution, __cann't it_?

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1. less

2. fewer

3. fewer

4. more

5. more

6. More

7. less

8. fewer