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.
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Question: The car engine outperformed the bus engine simply because the _ was inefficient during the test run.

Answer: bus


Question: She chose to wax her legs rather than using a razor because she disliked the rougher look that using the _ gave her.

Answer: razor


Question: The puppy had fleas, so they decided to try flea shampoo before a flea comb, because the _ seemed easier.

Answer:
shampoo