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:
Mark changed from toe shoes to leather shoes before going to the date with his girl friend because the _ are dressy.
answer:
leather shoes


question:
Mary tried to crack walnuts with her teeth for her heart healthy crunchy salad, but the _  were too weak.
answer:
teeth


question:
He brought out scissors and paper for the origami, but was told to fold and always use the _ .
answer:

paper