Problem: Continue the following story.

The postman always used the steps to the house instead of the escalator because the 
Here's how I want to continue it: steps felt safe to him.

Problem: Continue the following story.

Erin was better at driving than Kayla because 
Here's how I want to continue it: Erin had taken a driver's safety class at school.

Problem: Continue the following story.

The sales clerk tried to put the collar into the box but it would not fit because the 
Here's how I want to continue it:
collar was too big.