Problem: How does the sentence end?

Lawrence didn't want to pick Nelson to play on the team, because 
Answer: Lawrence didn't think they knew how to play.

Problem: How does the sentence end?

Kenneth calmed Benjamin because 
Answer: Benjamin was so upset about the bad experience at the restaurant.

Problem: How does the sentence end?

Jessica could never live up to Tanya's strict standards, because 
Answer: Jessica wasn't a good employee.

Problem: How does the sentence end?

Ian asked Robert to come over and help with his project to soundproof a room although 
Answer:
Robert couldn't help.