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: Cattle can have up to six to ____ years of grazing, after which a scrub savannah grows up.

SOLUTION: ten

PROBLEM: Babies can be exclusively breast-fed for their first ____ months of life.

SOLUTION: six

PROBLEM: Sows are hand-mated in groups with the breeding period restricted to ____ days for each group.

SOLUTION:
seven