TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Acute sinusitis is any infectious process in the sinus lasting from one day to _ weeks.

SOLUTION: three

PROBLEM: Lightning can travel _ miles or more horizontally from the storm, then strike the ground.

SOLUTION: six

PROBLEM: Plagioclase is the liquidus phase in the _ investigated systems, followed by the magnetite.

SOLUTION:
three