TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: New species are believed to arrive in the Mediterranean at the rate of _ to five annually.

SOLUTION: four

PROBLEM: Critters are our handmade teddy bears in _ sizes.

SOLUTION: three

PROBLEM: Scientists think that there are really _ different shapes of snow crystals.

SOLUTION:
four