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

[EX Q]: Frozen grafts can have a shelf life of up to _ years.
[EX A]: five

[EX Q]: All children normally wake up four or _ times each night after dreams.
[EX A]: five

[EX Q]: Most women take about _ weeks to stop bleeding and to heal inside.
[EX A]:
four