TASK DEFINITION: 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.
PROBLEM: George opted for both of them to use a knife instead of a gun in the duel because the _ could mortally injure them.

SOLUTION: gun

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

SOLUTION: birdhouse

PROBLEM: Her date wanted to give her something special, and went with the flowers instead of the chocolates, because the _ were classy.

SOLUTION:
flowers