[Q]: How does the sentence end?

The smell of roses was very pleasant to Kevin but Logan was indifferent to it, since

[A]: Kevin had a sensitive nose.

[Q]: How does the sentence end?

My dog started to have a stroke, and the medicine I used didn't help because the

[A]: stroke was too severe, so I called the animal hospital.

[Q]: How does the sentence end?

At the wedding, Aaron made Steven recite his vows during the ceremony.

[A]:
Aaron was the priest.