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: Some niqabs have ____ or two holes for the eyes.

SOLUTION: one

PROBLEM: Most cats have five toes on each front paw, but only ____ toes on each back paw.

SOLUTION: four

PROBLEM: Most mothers give birth to ____ young an average of every five to six years in the wild.

SOLUTION:
one