Problem: Continue the following story.

Robert blamed Leslie for wearing down the batteries in the remote control car. 
Here's how I want to continue it: Robert said it was inconsiderate and selfish.

Problem: Continue the following story.

Cynthia was cheaper then Lindsey, since 
Here's how I want to continue it: Lindsey wanted to buy travel insurance for the trip.

Problem: Continue the following story.

Derrick was much more successful in life than Brett was because 
Here's how I want to continue it:
Derrick worked hard in school.