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.

Teething begins for most babies around ____ to six months.
four

Pigs grow very quickly and are normally ready for sale at ____ to six months of age.
four

Rifts develop from separate domes creating ____ legged rift faults that join each other.

three