Problem: Continue the following story.

The new puppy will eat his dry food, but he doesn't like the wet food, so the 
Here's how I want to continue it: dry food must have an agreeable taste.

Problem: Continue the following story.

Lindsey has to deal with constant fainting so she goes to doctor Elena, because 
Here's how I want to continue it: Elena is a doctor.

Problem: Continue the following story.

The waist was hoisted up by a belt instead of a string, since the 
Here's how I want to continue it:
string was thinner.