In addressing people in Italy, it is always best to use the
polite form, lei. When doing business in Italy, it is smart to
address people using Signor and Signora.
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Civil, I had to do this in an English question when I was
nine.
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The comparative form of polite is more polite. The superlative form is most polite.
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She was polite as she dismissed him. It is polite to hold the
door for others.