TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Compound machines are _ or more simple machines working together.

SOLUTION: two

PROBLEM: Friction occurs when _ objects rub together.

SOLUTION: two

PROBLEM: Skunks tear out divots of turf that are _ to six inches in diameter.

SOLUTION:
three