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]: Some species live for as little as ____ months.
[A]: six


[Q]: Cytochrome oxidase consists of two cytochromes and ____ copper atoms.
[A]: two


[Q]: Nymphs pass through ____ instars.
[A]:
five