Problem: How does the sentence end?

In art class, Jessica was able to make a more colorful picture than Betty since
Answer: Betty had less watercolor pencils.

Problem: How does the sentence end?

I took a class on how to drive a truck instead of a bus because driving the
Answer: bus pays less.

Problem: How does the sentence end?

Tanya helped Emily to sit down and write out their goals, because
Answer: Tanya was experienced at this.

Problem: How does the sentence end?

William's debit card was stolen, but Justin's was not taken, so
Answer:
Justin is pretty content.