Problem: Continue the following story.

Jeffrey burned fewer calories than Christopher because 
Here's how I want to continue it: Christopher jumped rope for an hour longer per day.

Problem: Continue the following story.

The surface was a lot hotter than the floor, because the 
Here's how I want to continue it: floor was in the shade.

Problem: Continue the following story.

The accident that Hunter was in was worse than the one Donald was in because 
Here's how I want to continue it:
Donald was going slower.