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: Respiratory therapists complete two to ____ years of education.

A: four
****
Q: Sexual maturity is between ____ and six years of age.

A: three
****
Q: Insects have three pairs of legs and ____ body segments.

A:
three
****