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: Sponges have ____ main tissue layers.

SOLUTION: three

PROBLEM: Rodents contaminate ____ times more food than they eat.

SOLUTION: ten

PROBLEM: Water intoxication can occur after drinking as little as ____ litres.

SOLUTION:
three