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.

[Q]: Tin exists in ____ allotropic forms.
[A]: three


[Q]: Binary distillation is a separation of only ____ chemicals.
[A]: two


[Q]: Osteoporosis affects one in three women and ____ in ten men.
[A]:
one