read the friendly letter. which part is missing from the friendly letter? march 20, 2018 i had fun at your…

read the friendly letter. which part is missing from the friendly letter? march 20, 2018 i had fun at your birthday party. thank you for inviting me. i hope you had a great birthday! sincerely, sam body date salutation signature
Answer
Brief Explanations:
A friendly letter typically has a date, salutation, body, and signature. The given letter has a date (March 20, 2018), body ("I had fun... great birthday!"), and signature ("Sincerely, Sam"). But it lacks a salutation like "Dear [name]".
Answer:
salutation