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.

Most dens are oval shape, six to nine feet long and about ____ feet in height and width.
six

Mages can select from ____ spheres of magic - fire, water, air, earth and astral.
five

Female mealybugs have only ____ nymphal stages.

three