To ------------- knowledge to students is one of the chief duties of a teacher.

------------ may influence the lifestyles of teenagers, the way they dress and the way they behave.

Saying "thank you" is a socially ----------- manner in our culture.

Some manners are ----------- , for example table manners are adapted in every country.

Parents and teachers play a ---------- role in shaping their children's attitudes.

Our company has ------------ a reputation for quality of service.

For some students, their teachers are -----------.