题目内容：

听下面一段较长对话，回答以下小题。

1.What does Carol do when she volunteers?

A.She performs for children. B.She picks up trash. C.She serves dinner.

2.How often does Carol volunteer?

A.Once a week. B.Twice a week. C.Three times a week.

3.What does Jim worry about if he joins Carol?

A.Knowing little about the story. B.Choosing a boring book. C.Reading for hours.