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: Pathologists study four to ____ years after medical school and their postgraduate training.

SOLUTION: five

PROBLEM: Most litters contain two to ____ kittens.

SOLUTION: four

PROBLEM: Fruit is an excellent source of fiber, vitamins and minerals, and has ____ fat.

SOLUTION:
zero