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: As Mike visited the arctic his fever calmed down due to the _ being cold and not hot.

SOLUTION: arctic

PROBLEM: I prefer to have my photos printed on metal compared to canvas because the _ prints are contemporary.

SOLUTION: metal

PROBLEM: The excavator clawed its way through the tunnel, as the _ opened deeper and deeper.

SOLUTION:
tunnel