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.

Example Input: Humans grow with ____ sets of teeth.
Example Output: two

Example Input: Finches breed when the female is over one year old and the male is under ____ year old.
Example Output: five

Example Input: Some nurseries only take children aged ____ years and over.
Example Output:
two