TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Binary distillation separates _ chemicals.

SOLUTION: two

PROBLEM: Some people have _ or four careers during their lives.

SOLUTION: three

PROBLEM: Powder coatings are heat-fusible resin coatings that give off _ pollutants as they cure.

SOLUTION:
no