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.

Mature females bear two or even ____ calves a year.
three

Narwhals have ____ teeth in their upper jaw.
two

Polychrome is a decorative style, which utilizes at least ____ colors on the same piece of ceramic.

three