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

Q: Geckos have _ eyelids .

A: no
****
Q: Dwarf trees are diminutive and shrub-like, reaching _ feet or so at maturity.

A: four
****
Q: Coastal kelp beds, for example, appear to be three times larger than in the past four or _ years.

A:
five
****