Problem: Continue the following story.

Kayla sold peppermint essential oil to Mary, because 
Here's how I want to continue it: Mary is trying to establish a new health philosopy.

Problem: Continue the following story.

Megan bought more eggs than Rebecca did because 
Here's how I want to continue it: Rebecca was making toast for their breakfast.

Problem: Continue the following story.

Jeffrey raised Derrick's fish for many years. 
Here's how I want to continue it:
Jeffrey was more responsible with the pet fish.