问题补充:
We are going to talk about the problem at the last meeting.
A. discussed
B. discussing
C. to discuss
D. being discussed
答案:
(答案→)A. discussed
B. discussing
C. to discuss
D. being discussed
解析:考查分词用法。Problem与discuss构成被动关系,使用过去分词。Discussed at the last meeting修饰the problem. D项表示正在被讨论。句意:我们将要讨论上次会议上被讨论过的问题。