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: Photons have no mass and ____ electrical charge.

A: no
****
Q: Marine biologists have ____ theories on why whales breach.

A: two
****
Q: Physical abuse occurs in approximately one out of every ____ dating relationships.

A:
four
****