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.

Q: Philosophy has ____ axioms since it is simply what reason knows by means of concepts.

A: no
****
Q: Most organ systems are operational in the fetus by ____ to six months.

A: four
****
Q: Smoking is responsible for one out of ____ cases of heart disease.

A:
four
****