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]: Most aquatic life does well in water with oxygen concentrations of ____ parts per million.
[EX A]: nine

[EX Q]: Electric power means no gas or oil to spill, and ____ pollution in the air.
[EX A]: no

[EX Q]: Genetic disease knows ____ boundaries by age, sex, race, or country of origin.
[EX A]:
no