[Q]: How does the sentence end?

Robert was a lot better at learning compared to Benjamin, by reason that 
OPTIONS:
- Robert always listened.
- Benjamin always listened.

[A]: Robert always listened.
QUES: Continue writing.

Joseph went shopping for a diamond ring yesterday unlike Benjamin, because 

OPTIONS:
- Joseph was already engaged.
- Benjamin was already engaged.
+++++++++
ANS: Benjamin was already engaged.
Problem: How does the sentence end?

Sam needed to decrease either his fat or sugar intake. He chose to stop eating the 
OPTIONS:
- fat foods, due to his love for grease.
- sugar foods, due to his love for grease.
Answer: sugar foods, due to his love for grease.
sentence: Amy visited Erin's office to plan out their curriculum because  OPTIONS:
- Amy was recommending college classes.
- Erin was recommending college classes.
complete: Erin was recommending college classes.
The ears of Hunter are always dirty, but Kenneth doesn't have this issue because 
OPTIONS:
- Hunter is not as clean.
- Kenneth is not as clean.
Hunter is not as clean.
Problem: Continue the following story.

Kevin is a lot more knowledgeable about plants versus William because 
OPTIONS:
- Kevin is a botanist.
- William is a botanist.
Here's how I want to continue it:
Kevin is a botanist.