[Q]: How does the sentence end?

The brewery position was the perfect job for Laura but not Patricia because 
OPTIONS:
- Laura had extensive knowledge of craft beer.
- Patricia had extensive knowledge of craft beer.

[A]: Laura had extensive knowledge of craft beer.
QUES: Continue writing.

The brand new bicycle that we bought was faster than our scooter because the 

OPTIONS:
- bicycle was made from light metal.
- scooter was made from light metal.
+++++++++
ANS: bicycle was made from light metal.
Problem: How does the sentence end?

Aaron was desperately trying to avoid eating candies but Craig was not because 
OPTIONS:
- Aaron was overweight.
- Craig was overweight.
Answer: Aaron was overweight.
sentence: It was easy for Michael but not Eric to find a replacement part for the car because  OPTIONS:
- Michael did not work in the auto mall.
- Eric did not work in the auto mall.
complete: Eric did not work in the auto mall.
Rachel reread her favorite book and finished it in one day, so Emily bought her another book. 
OPTIONS:
- Rachel was excited to read the new book.
- Emily was excited to read the new book.
Rachel was excited to read the new book.
Problem: Continue the following story.

Christopher but not William would make a good babysitter because 
OPTIONS:
- Christopher did not know how to handle small children.
- William did not know how to handle small children.
Here's how I want to continue it:
William did not know how to handle small children.