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: Hypertension afflicts about ____ in four American adults, both men and women, of all ages.

A: one
****
Q: Deer mice have four toes on the forefeet and ____ toes on the hind feet.

A: five
****
Q: Coal accounts for ____ quarters of electricity generation.

A:
three
****