The Happy Birthday song is one of the most popular songs in the world.People around the world sing this song on their birthdays.But do you know the story behind the song？
   （A）______ 1893，Mildred Hill，a kindergarten teacher from American，wrote a simple tune（曲调），and her younger sister Patty added the lyrics（歌词）.They called it Good Morning to All . （B） Each morning，teachers sang this song to the children as a welcome song in the class.But when it came out，children across the United States loved this song very much，and they sang it to their teachers every afternoon when they left school.
    Later，Robert H.Coleman added a second part to the song.It was the now famous Happy Birthday song.His second part made the song much more （C） popular.Over time，the sisters' first part disappeared（消失）.The Happy Birthday song became the one and only birthday song. （D）现在全世界人们都非常喜欢它。

（1）在文中（A）处填入适当的单词 ：

In

In

（2）写出文中（B）处划线单词的同义词：

Every

Every

（3）将文中划线单词（C）译成汉语：

受欢迎的，流行的

受欢迎的，流行的

（4）将文中划线部分（D）译成英语：

People all over the world like it very much.

People all over the world like it very much.

（5）从文中找出能说明本文主旨大意的句子：

But do you know the story behind the song.

But do you know the story behind the song.