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]: Most health professionals recommend approximately ____ hours of sleep each night.
[A]: eight


[Q]: Spiders have eight jointed legs and ____ body parts.
[A]: two


[Q]: Most species have four toes, ____ of which are forward-pointing.
[A]:
three