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.

[EX Q]: Spiders have eight legs and usually have ____ eyes.
[EX A]: eight

[EX Q]: Tin exists in ____ allotropic forms.
[EX A]: three

[EX Q]: Kentucky bluegrass uses between ____ and six pounds of nitrogen per thousand square feet in a year.
[EX A]:
four