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]: Black widows mature in two to ____ months.
[A]: four


[Q]: Background color can be a transition of ____ colors.
[A]: two


[Q]: Higher education relates to government on ____ levels.
[A]:
three