And have them know basic manners like greeting people and saying please and thank you

I always be a role model. I am nice to people in the hope that my kid will follow suit

Exposure for them to be involved in discussion, and correct them appropriately

be a role model. encourage them to speak up at their own pace

Use polite language always :) They learn what they see

Best is to be the best example you can be as a parent

Or try best possible to watch my language

encourage them to talk more and read more

Try to be a role model n teach them too

All of the above, and start from young