题目内容：

Many people do the same things on their birthday: They have a big cake with lots of candles(蜡烛), and listen to their friends and family sing“Happy Birthday to You”.①　　　　would you like to pay money to sing that song?

Jennifer Nelson is a filmmaker. ②And she used the song“Happy Birthday to You”in her film.③但是她必须为此支付1,500美元。 A company named Warner Music Group said it had the copyright(版权) on the song.

“I never thought the song was owned(拥有) by anyone,”Nelson said in the e-mail to the New York Times.

Some experts(专家) said that nobody knew who wrote“Happy Birthday to You”.They also said there was no way to know ④　　　　　　　people began to sing the song. But they believed(相信) people started to sing it long before the company began to own. ⑤it.

1.在①处填入一个适当的连词使句意完整、上下文通顺：

　　　　　　　　　　　

2.将②处划线部分译成汉语：

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

3.将③处划线部分译成英语：

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

4.在④处填入一个适当的疑问句使句意完整、上下文通顺：

　　　　　　　　　　　

5.文中⑤处划线部分的it指代：