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: Cleavage is perfect in ____ directions forming rhombs.

SOLUTION: three

PROBLEM: Amphibians have ____ legs, and often look like reptiles.

SOLUTION: four

PROBLEM: Pangolins walk on all ____ of their stout limbs, which are adapted for digging.

SOLUTION:
four