Choose the right word.

When introducing a person, avoid the use of ... and ... phrases. Speak clearly to avoid ... . During the meal, it is ... to talk with your mouth full.
While interacting around the table, use ... tone of voice. Loud voices can be ... . Remember that during the conversation it it ... to interrupt the person who is talking. Following the basics of personal hygiene helps you stay ... .
Chewing gum at ... meetings is uncultured.