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: Hypertension afflicts about ____ in four American adults, both men and women, of all ages.

SOLUTION: one

PROBLEM: Pertussis is highly contagious with symptoms that can linger six to ____ weeks.

SOLUTION: ten

PROBLEM: Some people take ____ years to become a physicist or mathematician.

SOLUTION:
four