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: Echinoderms have radial symmetry , many having ____ or multiples of five arms.

A: five
****
Q: Milk contains ____ complex carbohydrates.

A: zero
****
Q: Piglets mature quickly and become sexually mature when they are about ____ months old.

A:
six
****