67. Congress is debating a bill requiring certain employers provide workers with unpaid leave so as to care for sick or newbom children.

(A)  provide workers with unpaid leave so as to

(B)  to provide workers with unpaid leave so as to

(C)  provide workers with unpaid leave in order that they

(D)  to provide workers with unpaid leave so that they can

(E)   provide workers with unpaid leave and

Choices A, C, and E are ungrammatical because, in this context, requiring ... employers must be followed by an infinitive. These options display additional faults: in A, so as to fails to specify that the workers receiving the leave will be the people caring for the infants and children; in order that they, as used in C, is imprecise and unidiomatic; and E says that the bill being debated would require the employers themselves to care for the children. Choice B offers the correct infinitive, to provide, but contains the faulty so as to. Choice D is best.

答案选对了，但是有几个问题想请NN帮忙解答一下

我知道so as to 要求前后逻辑主语一致，而so that是不是没有这个要求呢？

另外是不是so that后出现情态动词表目的，不加情态动词表结果，但是这两种情况对于逻辑主语一致与否的要求是相同的？

谢谢