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]: Silkies have _ seasonal moults but little hair is dropped.
[EX A]: two

[EX Q]: Energy supply is disaggregated into _ categories, renewable and non-renewable.
[EX A]:
two