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

[EX Q]: Smokeless tobacco is used in _ common forms.
[EX A]: two

[EX Q]: Rainforests cover less than _ percent of the Earth's surface.
[EX A]: two

[EX Q]: Diabetic complications develop in nearly a third of patients within _ years of diagnosis.
[EX A]:
ten