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: Child care is provided for children ages six weeks through ____ years of age.

A: four
****
Q: Niobium occurs primarily in ____ minerals, columbite and pyrochlore.

A: two
****
Q: Cinnabar exists in ____ crystal forms .

A:
two
****