Problem: Continue the following story.

Christopher showed Neil how to clean the showerhead because 
Here's how I want to continue it: Neil had never cleaned a bathroom.

Problem: Continue the following story.

Samantha tried to make homemade root beer for Jessica to celebrate their big event, but 
Here's how I want to continue it: Samantha was struggling.

Problem: Continue the following story.

The tea Matthew made was always more strong than the tea Ian made because 
Here's how I want to continue it:
Matthew left the teabag in the cup.