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: Females usually reach sexual maturity at about four years of age, males at about ____ years.

Answer: six

Question: Giant pandas move on all ____ legs.

Answer: four

Question: Canvasbacks travel along ____ major migration corridors, or flyways.

Answer:
three