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: Math was the simple paper in the exam and Chemistry the difficult because the _ had a strict teacher.

SOLUTION: Math

PROBLEM: My sister poured the remaining juice from the pitcher into the cup until the _ was full.

SOLUTION: cup

PROBLEM: Stains have never been attractive and this shirt had plenty of them.  I used bleach to get the _ out.

SOLUTION:
stains