TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Some people routinely sleep only _ hours a night but feel fine during the day.

SOLUTION: four

PROBLEM: White sturgeon inhabit _ large river systems, all on the western coast of North America.

SOLUTION: three

PROBLEM: Friendship means to trust _ or more people.

SOLUTION:
two