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]: Every isometry is the composition of one, two, or ____ reflections .
[A]: three


[Q]: Most insects have two antennae, six legs, and ____ wings.
[A]: four


[Q]: Sponges fall into ____ main groups according to how their bodies are organized.
[A]:
three