TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Some species bear living offspring only every _ to five years.

SOLUTION: three

PROBLEM: Presta valves are the skinnier of the _ valve types.

SOLUTION: two

PROBLEM: Mantids tend to be green or tan, and vary from three to _ inches long.

SOLUTION:
six