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]: Rabbits have a total of ____ teeth rather than four, as is characteristic of rodents.
[EX A]: six

[EX Q]: Many biologists believe the sandhill has been virtually unchanged for ____ million years.
[EX A]: nine

[EX Q]: Mosquitoes have four distinctive life stages, with the first ____ stages being spent in the water.
[EX A]:
three