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.

[EX Q]: Variable stars fall into ____ major physical classifications.
[EX A]: four

[EX Q]: Some species bear living offspring only every three to ____ years.
[EX A]: five

[EX Q]: Most wolves live in packs, usually made up of fewer than ____ individuals.
[EX A]:
eight