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: Counterpoint is simply ____ or more melodies played simultaneously.

SOLUTION: two

PROBLEM: All grays have ____ saturation.

SOLUTION: zero

PROBLEM: Counselling is important in a marriage for ____ willing participants.

SOLUTION:
two