Problem: How does the sentence end?

Matthew took Samuel on a week long vacation to Italy because
Answer: Matthew had won the lottery.

Problem: How does the sentence end?

Walking a dog is one of Aaron's job duties but not Justin because
Answer: Aaron is a dog person.

Problem: How does the sentence end?

Kenneth played better in the tennis game than Samuel because
Answer: Kenneth was in better shape and more athletic.

Problem: How does the sentence end?

Donald had light skin that would blister in the sun but Christopher didn't, therefore
Answer:
Donald needed a high SPF lotion.