[Q]: How does the sentence end?

Matthew knew how to cure a bleeding nose but Lawrence did not because 
OPTIONS:
- Matthew had a limited  knowledge of first aid.
- Lawrence had a limited  knowledge of first aid.

[A]: Lawrence had a limited  knowledge of first aid.
QUES: Continue writing.

He bought a dozen roses instead of tulips at the boutique, because the 

OPTIONS:
- roses were too expensive.
- tulips were too expensive.
+++++++++
ANS: tulips were too expensive.
Problem: How does the sentence end?

When I shot the paintball, it didn't go through the window as the 
OPTIONS:
- paintball was strong.
- window was strong.
Answer: window was strong.
sentence: The pet sitting business Eric starts is a failure compared to Kenneth's because  OPTIONS:
- Eric is a responsible owner.
- Kenneth is a responsible owner.
complete: Kenneth is a responsible owner.
Mary wanted to keep Tanya from entering the house, but 
OPTIONS:
- Mary got to the door before her.
- Tanya got to the door before her.
Tanya got to the door before her.
Problem: Continue the following story.

Samuel got onto Michael about how to clean despite the fact 
OPTIONS:
- Samuel always helped clean the place.
- Michael always helped clean the place.
Here's how I want to continue it:
Michael always helped clean the place.