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: Nymphs go through ____ instars and a pupa stage before reaching adulthood.

SOLUTION: three

PROBLEM: Neutrons consist of one up quark and ____ down quarks.

SOLUTION: two

PROBLEM: Most babies say their first words between ____ and eleven months of age.

SOLUTION:
ten