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.

China has about one in ____ of all smokers in the world.
four

Women are five to ____ times more likely than men to suffer thyroid disorders.
eight

Carpenter ants undergo complete metamorphosis , in ____ stages from egg to adult.

four