Who says: "You know not what you do"

What does this mean:
"Down with the Capulets! Down with the Montagues!"

Who says: "If ever you disturb our streets again, Your lives shall pay the forfeit of the peace."

Is there evidence that Benvolio is trusted by Montague?

What are the oxymorons that Romeo uses to describe his love for Rosaline?

"A choking gall, and a preserving sweet. Farewell, my coz." What does Romeo mean by this?

Who does Lord Capulet arrange a marriage with for Juilet?

Why does Juliet react in such a calm way when she finds out about Romeo being a Montague? "My only love sprung from my only hate"