instruction:
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.
question:
the box became weaker after it was soaked in water but the bowl is still strong because the _ is waterproof.
answer:
bowl


question:
I wanted to learn to operate a bulldozer this summer at the mine, so I asked my uncle to show me how to operate the _ .
answer:
bulldozer


question:
The tree root was hungry for water after the recent weather. The _ was dry and dying.
answer:

root