Problem: How does the sentence end?

Jessica was a Psychiatrist treating Samantha for paranoid personality disorder so
OPTIONS:
- Jessica prescribed them some medication.
- Samantha prescribed them some medication.
Answer: Jessica prescribed them some medication.

sentence: I wanted to write the letter using a pen instead of a marker. Using the OPTIONS:
- pen would look neat.
- marker would look neat.
complete: pen would look neat.

James decided to tear a paper when the nylon cannot be ripped off. The
OPTIONS:
- paper is tougher.
- nylon is tougher.
nylon is tougher.

Input: Continue writing.

People like the concrete on the main street more than the stone on the side street, because the
OPTIONS:
- stone is crumbling.
- concrete is crumbling.

Continued: stone is crumbling.

Story needs to be completed:
Donald's hobby was hiking while Kyle liked to read, so
OPTIONS:
- Donald spent a lot of time outdoors.
- Kyle spent a lot of time outdoors.

My choice:
Donald spent a lot of time outdoors.

Problem: How does the sentence end?

Emily would smile in all the photographs but not Christine because
OPTIONS:
- Emily had crooked teeth.
- Christine had crooked teeth.
Answer:
Christine had crooked teeth.