TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Older caterpillars have _ different color forms.

SOLUTION: two

PROBLEM: Smokers die an average of six to _ years earlier than nonsmokers.

SOLUTION: eight

PROBLEM: Rhinoviruses are most infectious in the first _ days of cold symptoms .

SOLUTION:
three