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

[EX Q]: Reds mature well for six to _ years.
[EX A]: eight

[EX Q]: Domestic violence occurs in one in _ families in Australia.
[EX A]: four

[EX Q]: Most volcanoes erupt for three to _ weeks and then rest.
[EX A]:
four