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]: Violets usually have ____ sepals at the base and have five petals.
[A]: five


[Q]: Statistics show that one out of every ____ people has a mental illness.
[A]: four


[Q]: Mosquitoes go through ____ stages in their life cycle development.
[A]:
four