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: Corporate mergers occur when ____ companies combine.

SOLUTION: two

PROBLEM: Collages can have two or ____ layers.

SOLUTION: three

PROBLEM: Solids can exhibit ____ different types of magnetic behavior depending on their atomic structure.

SOLUTION:
five