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 species take ____ to two years, or even more.

SOLUTION: one

PROBLEM: Cardinals have ____ main functions in the church.

SOLUTION: three

PROBLEM: Cows breed at ____ years, bulls at four.

SOLUTION:
three