Problem: Continue the following story.

Ian usually wore contact lenses, whereas Steven stuck to wearing glasses, because
Here's how I want to continue it: Steven had astygmatism.

Problem: Continue the following story.

Justin went to check on Christopher at their dorm, but no one was there.
Here's how I want to continue it: Justin was worried.

Problem: Continue the following story.

Jerry always wore a safety harness when he was on a roof but not on the driveway since the
Here's how I want to continue it:
driveway is flat.