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: Climbers are the most frequent cause of injury for children ____ and older.

SOLUTION: six

PROBLEM: All Jovian planets have rings around their equators and at least ____ moons.

SOLUTION: eight

PROBLEM: Food chains vary in length from three to ____ or more levels.

SOLUTION:
six