Problem: Continue the following story.

Betty had an easier time training the dog than Samantha because 
OPTIONS:
- Betty used negative reinforcement techniques.
- Samantha used negative reinforcement techniques.
Here's how I want to continue it: Samantha used negative reinforcement techniques.
Problem: The cat slept on the floor more often than it slept on the bed because it was easier for it to sit on the 
OPTIONS:
- floor .
- bed .

My choice: floor .
[Q]: How does the sentence end?

After the tornado destroyed their wood home they replaced it with a metal one, the 
OPTIONS:
- metal was unstable.
- wood was unstable.

[A]: wood was unstable.
QUES: Continue writing.

The mask made the woman feel uneasy so she held the doll because the 

OPTIONS:
- mask was comforting.
- doll was comforting.
+++++++++
ANS: doll was comforting.
Problem: How does the sentence end?

Rebecca will jog past Sarah every morning because 
OPTIONS:
- Rebecca prefers to be in last place.
- Sarah prefers to be in last place.
Answer: Sarah prefers to be in last place.
sentence: The boy tried to store the guitar in the case but the  OPTIONS:
- case was too small.
- guitar was too small.
complete:
case was too small.