1. saw
2. rang
3. flown
4. gone
5. swung
6. written
7. swum
8. Ted can lift that box more easily than I. We need a word or words that tell how Ted can lift the box. Words that answer that question are adverbs. But which expression is an adverb? Identify the adjective by using the two forms in a test sentence: “Try to find an easier/more easily way to do that.” Easier is an adjective, modifying the noun way. So, discard easier.
9. I wish you would walk more quietly. We need a word that tells how I wish you would walk. We need an adverb. To identify and eliminate the adjective, place both expressions before a noun in a sentence: “This is a quieter/more quietly room than I had before.” Quieter is an adjective, modifying the noun room. Therefore, we can’t use it as an adverb to modify the verb walk.
10. I can think more clearly when alone. This sentence also needs to answer the question how. Again, select the word that’s an adverb. Use a test sentence: “A clearer/more clearly explanation would be helpful.” Here, clearer modifies the noun explanation and is, therefore, an adjective. Discard clearer.
11. braver, bravest
12. more distinct, most distinct
13. worse, worst
14. higher, highest
15. more active, most active
16. longer, longest
17. larger, largest
18. Absolute
19. more beautiful, most beautiful
20. Absolute
21. more practical, most practical
22. lazier, laziest
23. Absolute
24. fatter, fattest