求教prep08语法笔记 中的一道题~

菲日光倾城

请问为什么不选A而选D？ so as to 连写的用法？与so ...as to 用法的区别？多谢！

OG10-171. In 1527 KingHenry VIII sought to have his marriage to Queen Catherine annulled so as tomarry Anne Boleyn.

(A) so as to marry

(B) and so could be married to

(C) to be married to

(D) so that he could marry

(E)  in order that he would marry

Key: D