We should never ever forget about the war in Iraq and the sufferings(苦难) caused to the peo

问题补充：

We should never ever forget about the war in Iraq and the sufferings(苦难) caused to the people there.

A. it

B. which

C. that

D. what

答案：

(答案→)A. it

B. which

C. that

D. what

解析：句意：我们永远不能忘记发生在伊拉克的战争以及它给那的人们带来的苦难。结合语境可知下文代词指代前文提到的伊拉克战争，故选A，其它选项无此用法。