TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Temperatures occasionally fall below _ but only last a very short time.

SOLUTION: zero

PROBLEM: Mammals have _ types of cartilage.

SOLUTION: three

PROBLEM: Hackberry is host to a large number of insects and diseases, most of which cause _ serious damage.

SOLUTION:
no