difficult as the problem of air pollution is to solve,we should still have confidence with new air pollution ___(release).答案是to release 为什么不是to be release?
with的复合宾语结构即" with + 宾语 + 宾语补足语"结构中,有一个非常特殊的不定式主动表被动的语法,即: 如果宾补动作当时还没有发生,不管宾语和宾语补足语的动词之间是主动关系还是被动关系,都一律使用不定式的主动结构做宾语补足语。 再如:With much work to do, I can't go out with you now. 此处用 to do,不能用 to be done
所以楼主例句中的 air pollution 和宾补动词 release 之间即使是被动关系,但还是使用其主动结构 to release 来充当宾语补足语,而不能是 to be released