[Q]: How does the sentence end?

Jennifer decided to travel the world, and invited Tanya to come, because 
OPTIONS:
- Jennifer wanted a companion.
- Tanya wanted a companion.

[A]: Jennifer wanted a companion.
QUES: Continue writing.

John got more money when he sold the coin than when he sold the stamp because the 

OPTIONS:
- stamp was valuable.
- coin was valuable.
+++++++++
ANS: coin was valuable.
Problem: How does the sentence end?

It's better to use natural shampoo for your hair than synthetic shampoo as the 
OPTIONS:
- natural shampoo is better for your hair.
- synthetic shampoo is better for your hair.
Answer: natural shampoo is better for your hair.
sentence: After stumbling back to the hotel room with a hangover, I spent the night hugging the toilet because the  OPTIONS:
- toilet was perfect for sleeping it off.
- hotel room was perfect for sleeping it off.
complete: hotel room was perfect for sleeping it off.
Kimberly loved to show off her legs but she didn't wear shorts and wore slacks instead because the 
OPTIONS:
- shorts were appropriate for church.
- slacks were appropriate for church.
slacks were appropriate for church.
Problem: Continue the following story.

The car of Monica has more horsepower than Elena's because 
OPTIONS:
- Monica 's car has fewer cylinders.
- Elena 's car has fewer cylinders.
Here's how I want to continue it:
Elena 's car has fewer cylinders.