The case was supposed to fit the firearm, but it didn't because the
OPTIONS:
- case was too long.
- firearm was too long.
firearm was too long.

Elena taught Jennifer how to train the new dog although
OPTIONS:
- Elena was an animal trainer.
- Jennifer was an animal trainer.
Jennifer was an animal trainer.

Jason worried that Christopher had an ear infection after he complained of ear pain, so
OPTIONS:
- Jason went to the doctor.
- Christopher went to the doctor.
Christopher went to the doctor.