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 tropical species have ____ or three generations per year.

SOLUTION: two

PROBLEM: Beryllium has ____ protons and four electrons.

SOLUTION: four

PROBLEM: Hakusan sake contains ____ preservatives or sulfites.

SOLUTION:
no