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: Ostriches come in at least ____ breeds.

SOLUTION: two

PROBLEM: Echinoderms have radial symmetry , many having ____ or multiples of five arms.

SOLUTION: five

PROBLEM: All ticks have three pairs of legs during the immature stage and ____ pairs as an adult.

SOLUTION:
four