英语翻译Theories centering on the individual suggest that childr

英语翻译
Theories centering on the individual suggest that children engage in criminal behavior because they were not sufficiently penalized for previous misdeeds or that they have learned crimnal behavior through interaction with others.这里尤其是 children engage in criminal,engage为什么不用被动,即 children was engage in criminal?
More families consist of one-parent households or two working parents;consequently,children are likely to have less supervision at home than was common in the traditional familiy structure.这里than之后省略了it吗?还是说省略了which?
There is no career counseling implicit in all of this.
Some use them to keep a close watch on the demand for their line of wok or gather information on compensation to arm themselves when negotiating for raise.这里的nformation on compensation to arm themselves是怎么个情况?
One theory ,dreamt up in all the spare time enjoyed by the alphabetically disadvantaaged,is that the rot sets  in early.这里的the alphabetically disadvantaaged是怎么个情况?
Home prices are holding steady in most regions.In Manhattan,"there's anew gold rush happening in the $4 million to $10 million range,predominantly fed by Wall Street bonuses,"says a broker.这里的,predominantly fed by是什么情况?
Getting a table at Manhattan's hot nes Alain Ducasse restaurant used to be impossible.Not for that,Greenspan&Co.may still be worth toasting.这里主要请分析省略的结构.
以上句子都来自2004考研英语真题,

engage in 可以被动 be engaged in 但是被动常用在参与积极的事物中.
than后省略了 that
是说他们并没有职业咨询师来帮助他们 所以他们只能随时关注相关信息,以便在谈判时候让自己胜算大一些（arm themselves）
这是插入语 字母表顺序排名靠后的人
这里指淘金热主要是华尔街操纵的 表示 因为 由于
要想在曼哈顿刚开业的火爆餐馆阿兰·杜卡斯订到位置,那几乎是不可能的.不说别的,单此 格林斯潘集团 或许就值得敬一杯酒