138. Senator Lasker has proposed legislation requiring that employers should retain all older workers indefinitely or show just cause for dismissal.

(A) that employers should retain all older workers

(B) that all older workers be retained by employers

(C) the retaining by employers of all older workers

(D) employers’ retention of all older workers

(E) employers to retain all older workers

In English, the idiom is requiring x to y or requiring that x y, with x as the noun subject and y the unconjugated form of the verb. Choice E, the best answer, follows the first paradigm.

关于荧光部分解释不是很懂，请大家帮忙，谢谢！

(B) that all older workers be retained by employers (the passive tense,though the usage of require is right,but workers act as the subject of show,while we need employers to show just cause for dismissal)

引用Longman的例句：

The urgency of the situation requires that we (should) make an immediate decision.

should可以省略，但是不是不省略就错了？