Thanks for your letter. I don't think I have ever answered so quickly
I am sorry it has been so long since I have written.
We had a marvelous time ....
Thank you for your letter and thank you for the photos.
Did your books reach home safely?
Dear Lena Thank you for the letter and the parcel.
I find it hard to believe that I have been writing to you for nearly six years but this is like writing to a different person.