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: Spiritual slavery comes in ____ forms.

SOLUTION: two

PROBLEM: Marine biologists have ____ theories on why whales breach.

SOLUTION: two

PROBLEM: Sexual reproduction involves two parents, one male and ____ female.

SOLUTION:
one