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


[Q]: Humans have two lungs, each fed by ____ bronchus.
[A]: one


[Q]: Marmots reach sexual maturity in ____ years.
[A]:
two