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: Manatees swim ____ to six miles per hour.

A: two
****
Q: Many biologists believe the sandhill has been virtually unchanged for ____ million years.

A: nine
****
Q: Ozone is a simple triatomic, reactive molecule formed from ____ oxygen atoms.

A:
three
****