[Q]: How does the sentence end?

The living room was dirtier than the bedroom, because everyone partied at the 
OPTIONS:
- living room .
- bedroom .

[A]: living room .
QUES: Continue writing.

Because Elena was dissatisfied with the service at the restaurant while Betty was happy, 

OPTIONS:
- Elena left a miniscule tip.
- Betty left a miniscule tip.
+++++++++
ANS: Elena left a miniscule tip.
Problem: How does the sentence end?

Jennifer was trained to be able to safely deliver Samantha's infant son, because 
OPTIONS:
- Jennifer was a doula.
- Samantha was a doula.
Answer: Jennifer was a doula.
sentence: She was writing her paper with ink, but needed to get more ink since the  OPTIONS:
- paper was scarce.
- ink was scarce.
complete: ink was scarce.
Patricia loved to drive a big truck but Victoria did not. 
OPTIONS:
- Patricia bought a new car.
- Victoria bought a new car.
Victoria bought a new car.
Problem: Continue the following story.

Matthew was removing the excess cancerous tissue with a scalpel from Jeffrey because 
OPTIONS:
- Matthew was a surgeon.
- Jeffrey was a surgeon.
Here's how I want to continue it:
Matthew was a surgeon.