Problem: Continue the following story.

The brushes that I used were a lot softer than the combs because the 
Here's how I want to continue it: combs were made from plastic.

Problem: Continue the following story.

Emily volunteers at the local shelter every weekend unlike Sarah, because 
Here's how I want to continue it: Sarah has no heart.

Problem: Continue the following story.

With great confidence, Maria entered the contest, while Angela stood on the sidelines, since 
Here's how I want to continue it:
Angela feared the challenge.