Trả lời: 1. slowest 2. braver3. bravest4. thinner5. thinnest6. easier7. easiest8. more important9. most important10. better11. best12. worse13. worst
Trả lời: 1. slower2. bigger3. more expensive4. better5. more modern6. dirtier
Trả lời: 1. the tallest2. the most beautiful3. the earliest4. the worst5. the easiest6. the best
Trả lời: 1. the smallest, smaller than2. as old as3. the youngest, younger than4. as good as5. the most exciting, more exciting than
Trả lời: 1. This book is different from that one.2. No one else in this class studies as well as her.3. He doesn't look like his brother.4. Nancy is younger than Peter.5. Independence is the most precious.