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 aquatic life does well in water with oxygen concentrations of ____ parts per million.

A: nine
****
Q: Water consists of ____ hydrogen and one oxygen atom.

A: two
****
Q: Many physicists believe that the neutrino, like a photon, has ____ mass at all.

A:
no
****