TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Rainforests cover less than _ percent of the Earth's surface.

SOLUTION: two

PROBLEM: Most cats have only four to _ toes per paw, depending on whether it is the front or back paw.

SOLUTION: five

PROBLEM: Mothers carry infants constantly their first _ weeks.

SOLUTION:
three