instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Water is the only substance on earth that exists naturally in _ states .
answer:
three


question:
Chicks take _ years to develop full adult plumage.
answer:
five


question:
Some robots have more than _ degrees of freedom, some less, depending on the kind of work they do.
answer:

six