I'm writing a letter.
The letter does not say what time she will come up to Tokyo.
The true secret of writing a good letter is to write as if you were talking.
If I had known his address, I would have written him a letter.
This letter contains sensitive information that may offend some people.
I hope this letter interests you and look forward to your reply.
My father, who is now working in America, wrote us a letter last week.
To her disappointment, his letter didn't come.
When writing a sentence, generally you start with a capital letter and finish with a period (.), an exclamation mark (!), or a question mark (?).
Being written in great haste, this letter has quite a few mistakes.
He wrote "Best regards" at the end of the letter and then went on to sign his name.
The letter I've been waiting for has arrived at last.
I also found every letter he had ever written to my mother.
His letter indirectly refers to the matter.
You will save your father a lot of worry if you simply write him a letter.