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.

As the gas filled the room, most people opted for the mask instead of the bag since the _ was efficient.
mask

The disease that the cat had was worse than the sickness that the dog had, therefore the _ died later.
sickness

The woman could not find the emerald in the drawer because the _ was so large.

drawer