[Q]: How does the sentence end?

I used vinegar on a carpet stain today, but now my room smells terrible since the

[A]: carpet is too thin.

[Q]: How does the sentence end?

Amy tripped and ripped her western shirt and needed a new shirt. She went to the store to get a T-shirt because the

[A]: T-shirt is new.

[Q]: How does the sentence end?

William was responsible with energy consumption, but Steven was wasteful for the reason that

[A]:
William was environmentally responsible.