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 amphibians reach maturity at three or ____ years.
[A]: four

[Q]: Rodents contaminate ____ times more food than they eat.
[A]: ten

[Q]: Most girls begin to wear their first coils, weighing as much as ____ kg, at age five.
[A]:
three