Problem: Continue the following story.

Neil had dental problem while Samuel did not because 
Here's how I want to continue it: Samuel did not eat a lot of sweets and visited the dentist regularly.

Problem: Continue the following story.

Carrie had to bring their pet to the vet more often than Erin had to bring theirs because the pet of 
Here's how I want to continue it: Erin suffered from less illnesses.

Problem: Continue the following story.

If Kevin wants to bounce a ball, but only has a basketball and a baseball, the 
Here's how I want to continue it:
baseball is his worse bet because it's denser.