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: Divorce affects one out of every ____ marriages today.

SOLUTION: four

PROBLEM: Wood consists of ____ distinct fuels.

SOLUTION: two

PROBLEM: Some geographers list only ____ continents, combining Europe and Asia into Eurasia.

SOLUTION:
six