I won’t go to the party tonight you told me you would. What’s the matter?A. SoB.

问题补充：

--- I won’t go to the party tonight.

--- you told me you would. What’s the matter?

A. So

B. Or

C. Because

D. But

答案：

A. So

B. Or

C. Because

(答案→)D. But

解析：句意：--我将不去参加今晚的聚会了。--但是你要将要告诉我。你怎么了？分析句意：对方提出不去参加聚会了，下文又提出询问对方如何情况。因此分析本句为转折关系。故选 D