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]: Females usually reach sexual maturity at about four years of age, males at about ____ years.
[A]: six


[Q]: Counterpoint is simply ____ or more melodies played simultaneously.
[A]: two


[Q]: Flesh flies are grey and black with ____ black stripes on the back.
[A]:
three