Problem: How does the sentence end?

To cope with the stress, Adam replaced the mattress in his room with a wooden board. The 
Answer: wooden board would relieve the stress.

Problem: How does the sentence end?

James went to buy a skateboard, which was on sale, or rollerblades. He picked the 
Answer: skateboard since money was tight.

Problem: How does the sentence end?

The florist sold flowers to Jeffrey but refused to sell them to Robert because 
Answer: Robert forgot to bring their wallet.

Problem: How does the sentence end?

The cake tasted better than the pie because the icing on the 
Answer:
cake was sweeter.