some superstistious practices should be abolished as soon as possible.有些迷信做法应尽早废除.
答案解析：这个句子是一个被动语态用法：如果句子主语是动作承受者,需要用被动语态
主语：some supersitious practices
谓语：should be abolished
状语：as soon as possible
被动语态构成：助动词be+及物动词过去分词构成的,abolish +ed=该动词过去分词呀
这里be有什么作用,还有abolish为什么要加ed,