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: They had a feeling either the bookcase or the clock would fall first. The _ was unstable.

SOLUTION: clock

PROBLEM: While the man modified the height of the bike, the boy rode the tricycle, because the _ was the incorrect height.

SOLUTION: bike

PROBLEM: The windows fell out of the house's frame, although the sills remained, because they neglected to install the _ properly.

SOLUTION:
windows