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: Most health professionals recommend approximately ____ hours of sleep each night.

A: eight
****
Q: Most people get one or ____ common colds every year.

A: two
****
Q: Connection is a ____ way exchange of attention.

A:
two
****