Problem: Continue the following story.

The park gardener dumped topsoil from the bag into the flower pot until the 
Here's how I want to continue it: bag was empty.

Problem: Continue the following story.

The swimmer chose to swim in the pool rather than the lake because the 
Here's how I want to continue it: pool was warmer.

Problem: Continue the following story.

Because Cynthia hates the outdoors and did not own a camper while Angela owned one, 
Here's how I want to continue it:
Angela often went camping.