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]: Hares hold their young ____ to ten days longer.
[A]: seven

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

[Q]: Choppers have two or ____ blades.
[A]:
three