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: Dogs are pack animals, and ____ dogs is the minimum number for proper socialization.

A: five
****
Q: Tuberculosis develops in ____ stages.

A: two
****
Q: Earth has ____ layers.

A:
four
****