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]: Tuataras reproduce very slowly, sometimes taking ____ years to reach sexual maturity.
[EX A]: ten

[EX Q]: Fire occurs any time ____ elements are present - fuel, heat, oxygen and the chemical chain reaction.
[EX A]: four

[EX Q]: Body temperature attains ambient levels within four to ____ hours.
[EX A]:
six