TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Tarantulas have _ pairs of book lungs.

SOLUTION: two

PROBLEM: Most smokers try to quit at least _ or six times before they succeed, researchers say.

SOLUTION: five

PROBLEM: Dolphins spend their time in small groups of _ to seven individuals.

SOLUTION:
five