Problem: How does the sentence end?

Although Joseph was a better English teacher than Hunter
Answer: Hunter never questioned when to use a comma.

Problem: How does the sentence end?

Brian is studying hard to become a firefighter so Logan will be proud of them, but
Answer: Brian wonders if it is enough.

Problem: How does the sentence end?

Mary sent a beautiful wedding invitation to Jessica because
Answer: Jessica was invited to the large wedding.

Problem: How does the sentence end?

Jennifer was trained to be able to safely deliver Samantha's infant son, because
Answer:
Jennifer was a doula.