In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Q: Some school boards have _ teacher-librarians at all.

A: no
****
Q: Aquatic adults have prominent red reathery gills, are large, and have _ toes on each foot.

A: four
****
Q: Leopard geckos reach sexual maturity at the age of _ to three years .

A:
one
****