Problem: How does the sentence end?

Justin refused to clean the house for Brian because 
Answer: Brian refused to pay them for the last time that they cleaned.

Problem: How does the sentence end?

Benjamin was more conscientious towards his fellow man than Hunter, so 
Answer: Benjamin rejected the idea of seeing people wrestle crocodiles.

Problem: How does the sentence end?

At the BBQ, Christopher asked Lawrence for a hamburger bun, because 
Answer: Lawrence did have an extra one.

Problem: How does the sentence end?

Stewart preferred taking a bus over a cab because the 
Answer:
cab was far more expensive.