Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.
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Question: Ozone leaves ____ by-products except pure oxygen.

Answer: no


Question: Most species have ____ toes, three of which are forward-pointing.

Answer: four


Question: Most batteries have a life span of ____ to five years.

Answer:
three