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.

[EX Q]: Collages can have two or ____ layers.
[EX A]: three

[EX Q]: Dogs have to be ____ months old before they are spayed or neutered.
[EX A]: six

[EX Q]: Quaternions have ____ imaginary axes, which creates the factor of three.
[EX A]:
three