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.

Andrew took notes and asked his teacher lots of questions in class, and he thought that the _ helped him prepare for the test.
notes

Winston went to the gym to get in shape, and decided to run on the treadmill and lift weights. The _ helped him lose weight.
treadmill

The razor cut James on the face while he was shaving. The _ was old and dull.

razor