Never should we forget the war and sufferings caused to the people.
A. it
B. which
C. that
D. what
网友回答
(答案→)A. it
B. which
C. that
D. what
解析：句意：千万不能忘了战争和战争给人们带来的痛苦。这里and前后都是句子，后一分句缺少主语，这里it代替the war，it前有关系词是that或which在从句中作宾语，省去了，先行词是sufferings，故选A。