A、Beer. B、Coffee. C、Tea. D、Vegetables. A本题属于细节考查题。题目询问他们不需要买什么。对话谈论关于购买咖啡、茶和蔬菜的事情，由此可知答案应为选项A(啤酒)。

W: Is this the bus that goes by the mall?
M: No, it isn’t. But you can transfer from this bus to bus number 24.
Q: What will the woman probably do?

M: Are we short of tea and coffee?
W: Oh, yes. And we also need some vegetables, too. It’s the next item on the list.
Q: What do they not need to buy?