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: Elephants have five toes on the fore feet and ____ on the hind feet.

A: four
****
Q: Numbers can be positive or ____ only.

A: zero
****
Q: Most people have a bowel movement anywhere between ____ times per day to three times per week.

A:
three
****