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: Nests Have at least one nest for every three to ____ hens.

SOLUTION: four

PROBLEM: Calves are born after a gestation of ____ months.

SOLUTION: nine

PROBLEM: Centipedes develop slowly, sometimes with ____ or more molts occurring before they mature.

SOLUTION:
seven