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]: Ostriches come in at least ____ breeds.
[A]: two


[Q]: Lancelets display all ____ of the vertebrate characteristics throughout their lives.
[A]: four


[Q]: Some mothers have ____ or more let-downs per feeding.
[A]:
two