1.d
2.b ( theo mk thấy thì câu 2 ko có đáp án nhưng cx ko chắc )
3.b
4.c
5.c
IV
1fast-faster 11. attractive-more attractive
2. thin- thinner 12. noisy-noisier
3. large-larger 13. old-older
4. tired-more tired 14. interesting-moreinteresting
5. good-better 15. wide-wider
6. clever-more clever 16. independent-more independent
7. short shorter 17. dry-drier
8. early-earlier 18. polluted-more pollution
9. happy-happier 19. long-longer
10. carefully-more careful 20. cheap-cheaper
V
1.between
2.from
3.on/at
4. of/on
5.on
6.at
7.at
8.to
9.in
10.to
VI
1.a
2.b
3.b
4.c
5.a
6.b
7.d
8.c
9.b
10.d