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: Scullers use ____ oars, sweep oarsmen pull just one.

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

A: three
****
Q: Most adults sleep between seven and ____ hours a night.

A:
eight
****