阅读对话，根据对话内容选择正确答案。

Lingling: Amy, how many apples do we have?

Amy: There are twenty—three apples. They are not enough. There are twenty—five children in our class.

Lingling: Yes, we need two more.

Amy: How many boxes of milk?

Lingling: There are twenty—five boxes of milk, but there are only twelve bananas. We need more bananas.

Amy: OK. Let's go to the supermarket.