tolong jawabin task 1, please!!!

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1. invitation
2. informal invitation
3. yes i have/no i have (itu tergantung kamu pernah dapet undangan atau tidak)
4. invitation formal : the invitation formal using the language raw. invitation informal : the invitation isn't formal use the language is not a (own language)
5. congratulations

maaf kalo salah, semoga membantu