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

Answer: three


Question: Climbers are the most frequent cause of injury for children ____ and older.

Answer: six


Question: Lead poisoning is especially dangerous in children ages six months to ____ years old.

Answer:
six