问题
选择题
The experts present at the conference all insisted that greenhouse gas emission be reduced from now on.
A.must
B.will
C./
D.can
答案
答案:C
题目分析:句意:出席会议的专家都坚持温室气体排放从现在起要减少。动词insist做为“坚持要求”的时候,后面的宾语从句,用虚拟语气,谓语是should do,should可以省略,所以选C。