[求助]OG11-82，83

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

OG 的解释是requiringthat employers retain 或requiring employers to retain 都可以，但是introducing should is not correct. 然后在83题，OG进一步解释到在require,request, ask, mandate等词后面应该用虚拟语气，直接用动词原形。

我的问题是OG的意思这类词后面的宾语从句使用虚拟语气， 但是我在张振邦语法中查了，这本语法书中说：在decide, desire, demand, order, suggest等表示“决定”、“要求”、“命令”、“建议”等意义的动词后，that-分句中常用“推定”should或者be-型虚拟式（在比较正式的语体中）。这不是和OG矛盾吗？这到底是怎么回事呢？

玩GMAT就要遵守GMAC的游戏规则。

一切以og为准！

自己顶一下，NN帮忙解释一下吧。。。