问题
选择题
The two presidents agree with each other on the whole, but much remains______at the following meeting.
A．discussing
B．discussed
C．to discuss
D．to be discussed
答案
答案：D
此题考查非谓语动词的用法。remain为系动词，相当于be动词，该句主语much和discuss 之间存在被动关系，且从后面的at the following meeting 知道该动作是将要发生的，故选D，而不选B。