Problem: How does the sentence end?

Jessica's lungs were much blacker unlike Laura's because 
Answer: Jessica liked to smoke on their work breaks.

Problem: How does the sentence end?

Kenneth asked Craig for advice on treating shin splints because 
Answer: Kenneth was new to running and had never experienced them before.

Problem: How does the sentence end?

Craig wanted to sell consumer goods for a career, Leslie did not because 
Answer: Craig was outgoing.

Problem: How does the sentence end?

He stopped buying at the shop and starting going to the store instead, because the 
Answer:
shop had steep prices.