— What’s the main purpose of tonight’s meeting?— We are going to talk about the problem a

问题补充：

— What’s the main purpose of tonight’s meeting?

— We are going to talk about the problem at the last meeting.

A. having discussed

B. to be discussed

C. being discussed

D. discussed

答案：

A. having discussed

B. to be discussed

C. being discussed

(答案→)D. discussed

解析：考查非谓语动词作后置定语。 the problem 和 discuss是动宾关系，所以要用过去分词形式；且 last meeting表示事情已经过去，选D。表被动和完成。