Problem: Continue the following story.

The windows were very dirty, but Joseph saw no reason to clean them while William immediately cleaned them.  
Here's how I want to continue it: Joseph was a naturally dirty person.

Problem: Continue the following story.

The parents were furnishing their home and ultimately chose the couch over the table because the 
Here's how I want to continue it: table was too expensive.

Problem: Continue the following story.

Sleeping in a loft bed was not a good idea for Samantha but it was for Elena because 
Here's how I want to continue it:
Elena was comfortable with heights.