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: Malaria kills up to ____ million people each year.

SOLUTION: two

PROBLEM: Tetrads come in ____ shapes.

SOLUTION: seven

PROBLEM: Drug offenders make up about one in ____ prison inmates nationwide.

SOLUTION:
four