英语翻译

英语翻译
It's time for Mr.Black to go to work.Mrs Black gave him a letter.
"plese post it on your way to work."
"OK,I know I'm always forgetful .But this time I'll surely do it"
Mrs Black smiled,"I'm sure you will."
Mr Black walked down the street.Then a man came up to him and smiled,"Don't forget to post the letter!" Then a girl wal walked by .She smiled too."Be sure to post the letter!" she said >Mr Black wondered,"How do these people know I have a letter to post?" At lat,he came to the letter box.He put the letter in it and walked on.But anain a man said to him,"post the letter,please."This time Mr Black is angry.Then the man told him,"There 's a big piece of paper on the back of your coat.Let me take it off." He showed the note to Mr Black.It said,"Tell him to post the letter.