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.

[EX Q]: Presidential elections take place every ____ years.
[EX A]: four

[EX Q]: Carnivals travel for as much as ____ months out of the year.
[EX A]: seven

[EX Q]: Fusion is the joining of ____ or more vertebrae.
[EX A]:
two