Suppose you are Amin or Amina. Your younger brother's engagement ceremony will be held on the 10th of next month at your family home. Everything has been arranged. Now prepare the following related to the ceremony.

a. Write a formal invitation letter to your friend Amir/Amira, inviting them to attend the engagement ceremony. Include date, time, venue and a polite request to come.

b. Draft a short announcement (2–3 sentences) suitable for posting on social media to invite extended friends and relatives.

c. Make a concise checklist (5–6 items) of things guests should know or bring and a suggested dress code.

d. Write a short RSVP reply from Amir/Amira accepting the invitation and mentioning whether they will bring a gift and if they need directions.