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]: Sexual maturity is reached at ____ years, and females calve every other year.
[A]: four


[Q]: Soy products contain ____ known classes of anti-cancer agents, including phytoestrogens.
[A]: five


[Q]: Pupae are present about ____ days before a new generation of adults begins to emerge.
[A]:
ten