Sentence:  `` You are bound to get involved with people when you have children '' , Fran had told me at our first meeting , `` so it is good to <WSD>know</WSD> that those with whom you get involved are not just dreary little housewives and dull husbands , but People Who Do Things '' . 
Meaning of the word marked with <WSD> tags:  be aware of the truth of something; have a belief or faith in something; regard as true beyond any doubt