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: Today there are ____ mating pairs.

SOLUTION: four

PROBLEM: Some nurseries only take children aged ____ years and over.

SOLUTION: two

PROBLEM: Respect is for every species in the world, including all ____ races.

SOLUTION:
four