Problem: How does the sentence end?

Nina got reprimanded for using her voice in the theater since the
Answer: voice was very loud.

Problem: How does the sentence end?

The bumper sticker on the car expressed the interests of Katrina rather than Betty since
Answer: Betty did not own the car.

Problem: How does the sentence end?

Shipping packages was always a huge hassle for William although it didn't bother Adam, because
Answer: William did not have a car to get to the post office.

Problem: How does the sentence end?

Dennis wanted to teach biology, but Lawrence thought he should teach chemistry so
Answer:
Dennis relented and taught chemistry.