Problem: How does the sentence end?

Christine sat at the window and watched for Angela to arrive because
Answer: Christine had missed him while he was gone on a trip.

Problem: How does the sentence end?

Kenneth thoughts gnats were a nuisance but Aaron did not.
Answer: Aaron ignored the gnats flying around.

Problem: How does the sentence end?

The earthquake destroyed the house of Samuel, but not Jeffrey's, so
Answer: Samuel is now very upset.

Problem: How does the sentence end?

Justin attended all of the wild parties without Brett, because
Answer:
Brett wanted to be a homebody.