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: People often have to wait between three and ____ years for an organ especially for a liver.

A: five
****
Q: Some niqabs have ____ or two holes for the eyes.

A: one
****
Q: Birds of prey have extremely sharp sight, up to ____ times sharper than our eyesight.

A:
eight
****