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.

[EX Q]: Counterpoint is simply ____ or more melodies played simultaneously.
[EX A]: two

[EX Q]: Cleavage is good in ____ directions at right angles.
[EX A]: two

[EX Q]: Chromatography is unique because of ____ reasons.
[EX A]:
three