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 momentum but ____ mass or electrical charge.

A: no
****
Q: Sexual maturity is reached at ____ years, and females calve every other year.

A: four
****
Q: Horses do have ____ blind spots, however.

A:
two
****