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

SOLUTION: six

PROBLEM: Dashes are ____ times the length of dots.

SOLUTION: three

PROBLEM: Some languages have all ____ tenses, some have only two, and some have no tenses at all.

SOLUTION:
three