补全对话: 根据对话内容，从方框中选出能填入横线处的最佳选项(其中有两项是多余的)。
A: Hi Betty!
B: Yes, I went there with my parents.
A:
B: Wonderful. Many famous singers sang at the concert.
A: What does it mean?
B: The concert was held for collecting money for the children who are too poor to go to school.
A: That’s true.
B: I think people should give them help as much as possible.
A: