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: Sharks have ____ gill slits on each side of the head.

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

A: no
****
Q: Marriage occurs when all ____ phases are in effect.

A:
three
****