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:
I always did well in that topic, but I alway struggled in the other subject, because the _ was a lot easier.
answer:
topic


question:
I used a battery to take pictures with the camera and put them in an album until the _ needed charging.
answer:
battery


question:
I can't use my car to tow my boat, because the _ is just too heavy.
answer:

boat