Simply answer, nothing crazy, do not use AI (any detection is a fail):
What does Gregor do for a living?
How much longer does Gregor need to work for his boss to pay off his parent's debt to him?
Why did the manager come to Gregor's house?
How did Gregor's dad force Gregor back into Gregor's room?

What benefit is there, if any, with Gregor's transformation? 

Your answer should take into consideration both Gregor's perspective and the family's perspective.