Решение:
- This blue cover is prettier (pretty) than that red cover.
- Tina works busily (busy) in our office.
- This character is more interesting (not interesting) as that character.
- David is meaner (mean) boy in our class.
- The triplets do their school projects more carefully (careful) than us.
- This is a good (good) review on the website.
- Eva makes people laugh more easily (easy) than you.
- I don't tell jokes as badly (bad) as you!
Ответ: 1. prettier 2. busily 3. more interesting 4. meaner 5. more carefully 6. a good 7. more easily 8. badly