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: Penguins have ____ seasons in their year, as follows.

SOLUTION: four

PROBLEM: Some species take ____ to two years, or even more.

SOLUTION: one

PROBLEM: Cheetahs live alone or in small groups numbering up to ____ individuals.

SOLUTION:
six