[Q]: How does the sentence end?

Jamie needed both hearing aids and glasses. Today, she had less trouble hearing than seeing because she forgot the 
OPTIONS:
- hearing aids .
- glasses .

[A]: glasses .
QUES: Continue writing.

It's easier to housebreak the dog on the mat rather than the floor, as the 

OPTIONS:
- mat is inadequate for them to squat on.
- floor is inadequate for them to squat on.
+++++++++
ANS: floor is inadequate for them to squat on.
Problem: How does the sentence end?

The man took the stairwell to the third floor instead of the elevator because the 
OPTIONS:
- stairwell was congested.
- elevator was congested.
Answer: elevator was congested.
sentence: Tina asked guests to take off their shoes when entering the house because she had a new carpet. She said the  OPTIONS:
- shoes were often dirty.
- carpet were often dirty.
complete: shoes were often dirty.
Christine was suffering from problems with their sinuses but not Rebecca because 
OPTIONS:
- Christine had a lot of allergies.
- Rebecca had a lot of allergies.
Christine had a lot of allergies.
Problem: Continue the following story.

Logan got a rabbit for Nelson for his birthday and 
OPTIONS:
- Logan was so happy for such a lovely gift.
- Nelson was so happy for such a lovely gift.
Here's how I want to continue it:
Nelson was so happy for such a lovely gift.