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: Reds can benefit from ____ to nine years' aging .

A: seven
****
Q: Beryllium has ____ protons and four electrons.

A: four
****
Q: Most geckos live for about ____ to ten years.

A:
four
****