题目内容：

A：Hi，Lily! Did you go to the concert 1ast night?

B：Yes, 1.

A：2.

B：Wonderful．Many famous singers sang at the concert．3.

A：What does it mean?

B：4. You know many children in the world don't have enough food．

A：5.

B：I think people all over the world should help them.

A：That's right!