Problem: How does the sentence end?

Tanya loved the washer that Mary bought for her, so 
Answer: Tanya wrote a thank you note.

Problem: How does the sentence end?

The box was still visible after James tried his best to manage the wrapper on it. James should have used the 
Answer: wrapper that is big.

Problem: How does the sentence end?

For a first time gardener, I don't recommend buying rose seeds. Try lily seeds instead since the 
Answer: rose is a hard plant to grow.

Problem: How does the sentence end?

Love songs sound better played on the violin than the clarinet because the 
Answer:
clarinet is harsher.