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:
Pacific salmon leave their home stream, swim out to sea and return ____ to six years later to spawn.
answer:
one


question:
Primates have ____ digits on their forelimbs.
answer:
five


question:
Hoary marmots reach sexual maturity at ____ years of age.
answer:

two