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: Sharks have a total of ____ senses, five of which are involved in locating food.

SOLUTION: six

PROBLEM: Condoms actually play ____ roles during sex.

SOLUTION:
two