Problem: Continue the following story.

Kenneth ran out of quarters at the arcade. He robbed William because 
OPTIONS:
- Kenneth was a devious person.
- William was a devious person.
Here's how I want to continue it: Kenneth was a devious person.
Problem: Rachel played in the swimming pool while Jessica jumped in the muddy puddle. 
OPTIONS:
- Rachel was still clean when they returned home.
- Jessica was still clean when they returned home.

My choice: Rachel was still clean when they returned home.
[Q]: How does the sentence end?

With great confidence, Maria entered the contest, while Angela stood on the sidelines, since 
OPTIONS:
- Maria feared the challenge.
- Angela feared the challenge.

[A]: Angela feared the challenge.
QUES: Continue writing.

We were able to customize the guitar but not the violin since the 

OPTIONS:
- guitar was mutable.
- violin was mutable.
+++++++++
ANS: guitar was mutable.
Problem: How does the sentence end?

When it came to learning English, Emily had no problem, but Rachel had a hard time, because 
OPTIONS:
- Emily was born and raised speaking Spanish.
- Rachel was born and raised speaking Spanish.
Answer: Rachel was born and raised speaking Spanish.
sentence: Felicia asked Rachel whether the medical procedure was perfectly safe,  OPTIONS:
- Felicia was confident it was.
- Rachel was confident it was.
complete:
Rachel was confident it was.