Answer:
Gatsby is killed because Tom Buchanan told Mr. Wilson that Jay Gatsby had killed Myrtle even though Daisy Buchanan was the one behind the wheel when Myrtle was struck. Therefore, Mr. Wilson believes that Gatsby killed his wife Myrtle Wilson.
Not sure who despereaux is? Harry potter yes
Answer:
Charlie, and the reader as well, both begin to have an inkling that his intelligence may not be permanent as he listens to Dr. Nemur's presentation in "Progress Report 13." Charlie even realizes that Nemur did not take into account his rapid rise in intelligence, and that now, Charlie may even regress into a lower IQ than before the experiment.