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:
Early childhood refers to the time period between birth and ____ years of age.
answer:
eight


question:
Mosquitoes live four to ____ weeks.
answer:
eight


question:
Human cooperation is the result of ____ factors.
answer:

three