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: Western medicine uses ____ approaches, drugs or surgery.

SOLUTION: two

PROBLEM: Ospreys mature after ____ years of age.

SOLUTION: two

PROBLEM: Collages can have two or ____ layers.

SOLUTION:
three