Story needs to be completed:
Derrick's ukulele playing sounded far worse than Leslie's performance for the reason that 
OPTIONS:
- Derrick was an expert at the instrument.
- Leslie was an expert at the instrument.

My choice:
Leslie was an expert at the instrument.
Problem: Continue the following story.

Katrina has a calm temperament but Patricia is quite volatile. Everyone loves to be around 
OPTIONS:
- Katrina .
- Patricia .
Here's how I want to continue it: Katrina .
Problem: Because Dennis was not as famous as Robert, people hardly ever recognized 
OPTIONS:
- Dennis first when out in public.
- Robert first when out in public.

My choice: Dennis first when out in public.
[Q]: How does the sentence end?

James found out some stain on his teeth even after using the brush. The 
OPTIONS:
- brush is tough.
- stain is tough.

[A]: stain is tough.
QUES: Continue writing.

The apartment that Amy lived in allowed pets but not Betty's place, therefore 

OPTIONS:
- Amy had a dog.
- Betty had a dog.
+++++++++
ANS: Amy had a dog.
QUES: Continue writing.

Dennis robbed Matthew of his jewelry because 

OPTIONS:
- Dennis had a lot of worldly possessions to begin with.
- Matthew had a lot of worldly possessions to begin with.
+++++++++
ANS:
Matthew had a lot of worldly possessions to begin with.