问题补充:
The two presidents agree with each other on the whole, but much remainsat the following meeting.
A. discussing
B. discussed
C. to discuss
D. to be discussed
答案:
A. discussing
B. discussed
C. to discuss
(答案→)D. to be discussed
解析: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。