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: Success is a function of ____ things.

A: two
****
Q: Some animals can survive freezing, but ____ animals can survive grinding.

A: no
****
Q: Most birds have ____ toes on their feet.

A:
four
****