[Q]: How does the sentence end?

While walking through the store, Carrie bought a shirt for Mary because

[A]: Mary had no style.

[Q]: How does the sentence end?

Angela had to take the place of Christine in the school play, because

[A]: Angela was the backup.

[Q]: How does the sentence end?

Dennis used soothing words to comfort Hunter because

[A]:
Hunter was hysterical after the car accident.