not to be late for the meeting we arrived forty minutes the required time but after see

问题补充：

not to be late for the meeting, we arrived forty minutes the required time, but after seemed hours of waiting, we were informed the meeting had been canceled.

A. So as; ahead of; what

B. In order; ahead of; what

C. So as; in advance of; it

D. In order; ahead of; it

答案：

A. So as; ahead of; what

(答案→)B. In order; ahead of; what

C. So as; in advance of; it

D. In order; ahead of; it

解析：考查短语及名词性从句。so as to与in order to 都是为了做某事，前者只能放在句中，后者句首、句中都可以；ahead of time提前，第三个空考查名词性从句，从句中缺少主语故用what，所以答案选B。