Problem: Continue the following story.

Laura helped Katrina study for the upcoming test because
OPTIONS:
- Laura was already very good at the subject.
- Katrina was already very good at the subject.
Here's how I want to continue it: Laura was already very good at the subject.

Problem: Continue the following story.

I couldn't zip the backpack with the book in it because the
OPTIONS:
- book is too short.
- backpack is too short.
Here's how I want to continue it: backpack is too short.

Problem: Continue the following story.

My schedule is a lot more difficult than her daily routine, because the
OPTIONS:
- schedule is intense.
- routine is intense.
Here's how I want to continue it:
schedule is intense.