Problem: How does the sentence end?

Angela still hadn't given up smoking, while Tanya had quit last year, because
Answer: Tanya had strong willpower.

Problem: How does the sentence end?

Rachel was due to have a baby this spring, while Christine was not pregnant, so
Answer: Christine did not need to buy baby clothes soon.

Problem: How does the sentence end?

Matthew is much better at putting makeup on Jason because
Answer: Matthew is a professional makeup artist.

Problem: How does the sentence end?

A flashy automobile is what Joseph drives but not Craig because
Answer:
Craig makes less money.