King Henry sought to have his marriage annuled so as to marry AB.
答案 (D) so that he could marry
可以理解D是对的,但不太明白对于A的解释"so as to marry is not idiomatically correct"。 不是有so as to do sth的用法吗。牛津字典里的解释:with the intention of doing sth.: We went early so as to get good seats.