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: Humans grow with ____ sets of teeth.

SOLUTION: two

PROBLEM: Most veterinarians recommend spaying between four and ____ months of age.

SOLUTION:
six