TASK DEFINITION: Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.
PROBLEM: Water emits oscillations that are measurable from ____ through Megahertz.

SOLUTION: zero

PROBLEM: Respiratory therapists complete two to ____ years of education.

SOLUTION: four

PROBLEM: Aardvarks have ____ toes on the front feet and five toes on their back feet.

SOLUTION:
four