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: We cannot see the coin at the base of the pool but we can see it at the base of the drum. The _  is shallow.

SOLUTION: drum

PROBLEM: they had a pet tarantula that liked to climb the walls instead of the floor, because the _ were higher.

SOLUTION: walls

PROBLEM: James needed more sheet when adding up the cost of making up the even because the _ is short.

SOLUTION:
sheet