he other sonnet-only feature you should keep in mind is the volta, which means "turn" in Italian (think "revolve").
Answer:
As he gains intelligence, Charlie realizes his co-workers, including Joe and Frank, seem afraid of him and are not so friendly anymore. Finally, Charlie recognizes that Frank and Joe used to laugh at him and never were his real friends. He feels foolish for being deceived by them.
Explanation:
The answer is most likely the second one
Change happen to happened because it is past tense
