Problem: How does the sentence end?

Benjamin had very clear and youthful skin but Brett had rough aged skin because
Answer: Brett took poor care of their skin.

Problem: How does the sentence end?

The speech that Jessica wrote was more shoddy than Mary's because
Answer: Mary is a writer.

Problem: How does the sentence end?

William teaches the class that's attended by Lawrence every day, because
Answer: William loves providing knowledge.

Problem: How does the sentence end?

Carrie offends Rebecca with the language they use at dinner because
Answer:
Carrie is vey crude.