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: Lightning is ____ times hotter than the surface of the sun.

A: three
****
Q: Hedgehogs give birth to one to ____ babies which are born with the spines just below the skin.

A: seven
****
Q: Alligators go on ____ feet.

A:
four
****