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.

[Q]: Today there are ____ mating pairs.
[A]: four


[Q]: Marshes are shallow wetlands less than ____ meters deep.
[A]: two


[Q]: Some species have more than ____ pairs of walking legs.
[A]:
four