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: Crustaceans have ____ pairs of antennae.

A: two
****
Q: Many addicts use opium because they have ____ access to public health care facilities.

A: no
****
Q: Salt takes ____ days to start to develop, and can keep growing for about a week.

A:
three
****