Desu ne is something you want to tell them that you felt right or after the question you ask (with someone Same age, really friendly with ỏ ưith the person is younger than you)
And Desu ka? Is the word like "right?" Is the Question too. Usually they use to the person you not really friend or the person older than you (formal)
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Idk how to translate leather jacket on here but you can just spell it out I guess... look at this:
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I know
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You could tell him/her that you have someother important thing which you have and avoid the party
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the use them in a sentences.
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