[Q]: How does the sentence end?

Brian wrote a best selling story about Brett because

[A]: Brett was a great book subject.

[Q]: How does the sentence end?

William hired a trainer named Samuel to help with his new dog, but

[A]: Samuel 's dominance methods were unappealing.

[Q]: How does the sentence end?

At the concert, Samantha offered a joint to Megan to smoke, but

[A]:
Samantha then rescinded the offer.