Problem: How does the sentence end?

The sidewalk had a lot of cracks but the driveway was very smooth. The 
Answer: driveway was seamless.

Problem: How does the sentence end?

Jessica told Carrie not to take something that doesn't belong to him, 
Answer: Carrie was so foolish compared to him.

Problem: How does the sentence end?

We decided to get married in the church instead of the chapel, but the 
Answer: church was more expensive.

Problem: How does the sentence end?

Donald liked the taste of mayonnaise on a sandwich but Steven liked mustard better. 
Answer:
Donald bought some Duke's mayo at the market.