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]: Giant pandas move on all ____ legs.
[A]: four


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


[Q]: Cats have ____ toes on each front paw, but only four toes on each back paw.
[A]:
five