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.

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


[Q]: I bought several tiny cases for my son to put his models in, but they didn't fit because the _ were too small.
[A]: cases


[Q]: The mother made the kids sandwiches with ham instead of with jam because the _ was sticky.
[A]:
jam