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]: Green lines represent the boundaries between the ____ hemispheres.
[A]: two

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

[Q]: Wing feathers are now ____ months old and continue to fade and wear.
[A]:
ten