Problem: How does the sentence end?

Christine is much taller than Patricia is because 
OPTIONS:
- Christine 's parents were very small people.
- Patricia 's parents were very small people.
Answer: Patricia 's parents were very small people.
sentence: The room was too stuffy for the businessman so he moved to the hallway, since the  OPTIONS:
- room was a pleasant environment.
- hallway was a pleasant environment.
complete: hallway was a pleasant environment.
There were many legal issues at the company but not at the town, as the 
OPTIONS:
- company engaged in honest dealings.
- town engaged in honest dealings.
town engaged in honest dealings.
Input: Continue writing.

The brush james bought could not get the stain off his teeth because the 
OPTIONS:
- brush is too tough.
- stain is too tough.

Continued: stain is too tough.
Story needs to be completed:
The phone of Donald is a lot better than Adam's because 
OPTIONS:
- Donald paid extra for his phone.
- Adam paid extra for his phone.

My choice:
Donald paid extra for his phone.
Problem: How does the sentence end?

I carried the beer from the back of the truck to the countertop until the 
OPTIONS:
- truck was completely full.
- countertop was completely full.
Answer:
countertop was completely full.