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

[EX Q]: Trees begin to bear _ to seven years after planting the root shoot.
[EX A]: five

[EX Q]: Anemone has _ vents.
[EX A]: two

[EX Q]: Acute pain is sudden pain that goes away quickly, usually lasting for less than _ months.
[EX A]:
three