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: Pathologists study four to ____ years after medical school and their postgraduate training.

Answer: five

Question: Spiders have eight jointed legs and ____ body parts.

Answer: two

Question: Most insects have two antennae, ____ legs, and four wings.

Answer:
six