An illustration shows you exactly what the book is trying to portray by using pictures or descriptive text. An illusion can be used to deceive someone or something into making it look like it is something else.
2. Works
3. Live
4. Love
5. Doesn’t
6. Doesn’t
7. Likes
8. Goes
9. Don’t
10. Phones
The predicate is the very and everything that follows after it, which could include adverbs, prepositional phrases, and other parts of speech. For example, "The dog ran across the street to the neighbor's house". Find the verb (the action or in your case, a linking verb such as is, are, was, wear, am). In my example, the verb is 'ran'. So the predicate is:
-ran across the street to the neighbor's house
For your sentence, the predicate is -was very strong.