---What’s that terrible noise?
---The neighbors for a party.
A. have prepared
B. are preparing
C. prepare
D. will prepare
网友回答
A. have prepared
(答案→)B. are preparing
C. prepare
D. will prepare
解析：这是一组对话。上文，那可怕的噪音是什么？下文，邻居们正在聚会。表示说话时正在进行的动作或状态，用现在进行时，故选B。