Problem: How does the sentence end?

Despite waiting for hours, Betty hoped Mary would show up, as 
OPTIONS:
- Betty still had time to rush there for her.
- Mary still had time to rush there for her.
Answer: Mary still had time to rush there for her.
sentence: The woman left the rice cooking on the stove but removed the beef because she didn't want  the  OPTIONS:
- rice to be undercooked.
- beef to be undercooked.
complete: rice to be undercooked.
Lawrence made a failed attempt to stab Randy , as 
OPTIONS:
- Lawrence 's dexterity was lacking.
- Randy 's dexterity was lacking.
Lawrence 's dexterity was lacking.
Input: Continue writing.

He would rather win the ball than the bat at the raffle, because he found the 
OPTIONS:
- ball to be useless.
- bat to be useless.

Continued: bat to be useless.
Story needs to be completed:
Aaron's dog followed commands while Christopher's dog barked throughout the night because 
OPTIONS:
- Aaron had a dog that was poorly trained.
- Christopher had a dog that was poorly trained.

My choice:
Christopher had a dog that was poorly trained.
Problem: How does the sentence end?

The decorator removed the lamp, but left the fan in the room, because the 
OPTIONS:
- lamp was a permanent fixture.
- fan was a permanent fixture.
Answer:
fan was a permanent fixture.