Hurry up Jack. We have to get to the station before 11:45 we can catch the 12:00 train.A.

问题补充：

Hurry up, Jack. We have to get to the station before 11:45 we can catch the 12:00 train.

A. since

B. after

C. as soon as

D. so that

答案：

A. since

B. after

C. as soon as

(答案→)D. so that

解析：句意：快点，杰克，我们必须在11：45前到达车站以便于我们能赶上12点的火车。so that引导目的状语从句，其它几项引导条件状语从句，故选D。