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.

Female dogs come into heat every ____ months or so.
six

Asbestos is a generic term used to describe the fibrous form of ____ different minerals.
six

Mirror reflection is glide reflection with ____ glide, as translation is a special case of rotation.

zero