Problem: How does the sentence end?

Dennis cleaned their hamstercage out quicker than Aaron because
Answer: Aaron had failure in gaining his hamster's trust..

Problem: How does the sentence end?

It was easy for Robert but not Derrick to sleep on the bench because
Answer: Derrick took up too much space.

Problem: How does the sentence end?

Megan successfully lost their love handles but Betty didn't, because
Answer: Betty didn't hire a personal trainer.

Problem: How does the sentence end?

Megan gained a 3rd eye while Carrie was unchanged because
Answer:
Megan used their spare time to meditate.