You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.

[Q]: The pine trees were still green in December, but the oak trees were not, because the _ keep their leaves in fall.
[A]: pine trees


[Q]: The planted tree cannot form the shade for the fence yet because the _ is shorter.
[A]: tree


[Q]: The man couldn't stop thinking about the violin and the crossbow he lost when he was younger. He used to love to shoot _ .
[A]:
crossbow