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: Salsa works on the basis of Mambo - a pattern of ____ steps danced over eight counts of music.

SOLUTION: six

PROBLEM: Gorillas are sexually mature at ____ to nine years of age.

SOLUTION: six

PROBLEM: Larval tunicates are free swimmers and possess all ____ chordate characteristics.

SOLUTION:
four