A:When is your birthday?
B:August 1st.
A:Do you usually have a birthday party?
B:Yes,we do.My parents prepare dinner for me.
A:What would you do at the party?
B:We sing" Happy Birthday" at the party and have birthday cakes.
A:Do you know when people began to sing the song"Happy Birthday"?
B:Well,I don't know.
A:Let me tell you the story.In 1892,Patty Smith Hill and Mildred Hill wrote a song called" Good Morning to you".But later someone added the words "Happy Birthday" to their tune.
B:So the "Happy Birthday" song has been popular since then?
A:Yes,actually,the song has been sung since its publication in 1932.People all over the world have sung it in many different languages.