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]: He could either build the birdhouse or the tree-house first, but the _ would take less time to construct.
[A]: birdhouse


[Q]: David had to choose between a cold beer or a hot tea so he chose the _ since the day was warm.
[A]: beer


[Q]: John wanted a pet rat, but his parents gothim a fish instead since they felt that a pet _ was clean.
[A]:
fish