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

[EX Q]: Account is a ____ character code that describes the basic accounting classifications.
[EX A]: six

[EX Q]: Bone marrow replenishes itself fully within ____ weeks.
[EX A]:
two