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: Most people become sick ____ to seven days after infection.

SOLUTION: two

PROBLEM: Nests Have at least one nest for every three to ____ hens.

SOLUTION: four

PROBLEM: Alcoholism affects five elderly men for every ____ woman.

SOLUTION:
one