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]: Ospreys mature after ____ years of age.
[A]: two

[Q]: Bond angles The bond angle defined by ____ atoms is calculated.
[A]: three

[Q]: Chimpanzees give birth to a single infant approximately every ____ years.
[A]:
five