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: People often have to wait between three and ____ years for an organ especially for a liver.

SOLUTION: five

PROBLEM: Violets usually have ____ sepals at the base and have five petals.

SOLUTION: five

PROBLEM: Fireflies have ____ main body parts.

SOLUTION:
three