instruction:
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.
question:
Gorillas are sexually mature at ____ to nine years of age.
answer:
six


question:
Nests Have at least one nest for every three to ____ hens.
answer:
four


question:
Birds have ____ eyelids, and so do dogs and cats.
answer:

three