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]: Blood Parrots are a hybrid of ____ Cichlids species.
[A]: two


[Q]: Nests Have at least one nest for every three to ____ hens.
[A]: four


[Q]: Water consists of one oxygen atom and ____ hydrogen atoms.
[A]:
two