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: Rabbits have a total of ____ teeth rather than four, as is characteristic of rodents.

SOLUTION: six

PROBLEM: Women account for ____ in ten people diagnosed with the disease.

SOLUTION: eight

PROBLEM: Ammonia is added ____ hours after the chlorine, in a process called chloramination .

SOLUTION:
three