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: Sexual maturity occurs at ____ to four years for females and four to five years for males.

A: three
****
Q: Children can age an adult faster than ____ years in prison.

A: ten
****
Q: All elements fit into ____ crystal structures.

A:
nine
****