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]: Wood consists of ____ distinct fuels.
[EX A]: two

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

[EX Q]: Houseflies are grey and black with ____ black stripes on the back.
[EX A]:
four