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]: Brook stickleback have prominent mouths, large eyes and ____ to six spines on their backs.
[A]: four


[Q]: Women account for ____ in ten people diagnosed with the disease.
[A]: eight


[Q]: Vision disorders affect one in every ____ school-age children.
[A]:
four