Informal Letter Join A Picnic. We all will assemble at our residence on the 19th march at 6 a. You can use idioms in an informal letter.
I am glad to know that you are well. All of my friends have cordially invited you to join us. Write a letter to your friend inviting him to join a picnic at a picnic spot.
Here is a sample informal letter.
We are sure that you will accept our invitation. My studies are going well. You are aware that we have been planning a picnic. In this letter, one friend invites others for a picnic.