Answer:
Exercise 1
1. very - describes happy (adjective)
2. quite - describes imposingly (adverb)
3. extremely - describes tall (adjective)
4. quite - describes high (adjective)
5. totally - describes covered (verb)
6. short - describes time (noun)
7. extremely - describes powerful (adjective)
8. very - describes large (adjective)
Exercise 2
1. Yes, adverb of affirmation
2. Not, adverb of negation
3. Undoubtedly, adverb of affirmation
4. Indeed, adverb of affirmation
5. Not, adverb of negation
6. Never, adverb of negation
Exercise 3
1. Indeed, adverb of affirmation
2. Not, adverb of negation
3. Early, adverb of time
4. Barely, adverb of degree
5. Resolutely, adverb of degree
6. Several, adverb of degree
Explanation: