Writing letters and emails (586-600)

586    How long has it been since you’ve heard from your uncle?
587    When was the last time he wrote you?
588    I can’t recall how long it’s been.
589    I’m always disappointed when I don’t get any email.
590    I feel guilty because I haven’t written her lately.
591    What time is the mail delivered on Saturday?
592    The postman always comes at 2 o’clock.
593    I wrote to my uncle last night. I couldn’t put it off any longer.
594    I enclosed some photographs to my letter.
595    I didn’t know weather to send the letter airmail or not.
596    How long does it take for a letter to get to California?
597    Don’t forget to put stamps on the letter before you mail it.
598    He went to the post office to mail a letter and dropped the letter in the mailbox on the corner.
599    I attached some files to my email.
600    How did you sign the letter? Did you write, “Sincerely yours”?