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: All Jovian planets have rings around their equators and at least ____ moons.

A: eight
****
Q: Snow is on the ground for close to ____ months out of the year.

A: seven
****
Q: Activated carbon is used every ____ weeks for a period of a few days and is then removed.

A:
three
****