TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Carbon dioxide extinguishes fire by physically attacking all _ points of the fire triangle.

SOLUTION: three

PROBLEM: Most people go back to work within _ to three months after having a heart attack.

SOLUTION: one

PROBLEM: Composites have at least _ phases with different mechanical properties.

SOLUTION:
two