Problem: How does the sentence end?

We sold our tickets to the opera so we could go the symphony, as we heard the 
Answer: opera was terrible.

Problem: How does the sentence end?

Dennis collected acorns from trees to feed to squirrels while Justin didn't as 
Answer: Dennis loved squirrels.

Problem: How does the sentence end?

James needed a hammer to drive a nail to the wood but used his hand to drive the nail to the board. The 
Answer: wood is harder.

Problem: How does the sentence end?

Robert was teaching Randy to crochet a scarf so 
Answer:
Randy could make a gift for their daughter.