明天考, 非常急-2

12.The computer company!ˉs present troubles are a result of technological stagnation, marketing missteps, and managerial blunders

so that several attempts to revise corporate strategies have failed to correct it.
A. so that several attempts to revise corporate strategies have failed to correct it.
B. so that several attempts at revising corporate strategies have failed to correct
C. in that several attempts at revising corporate strategies have failed to correct them
D. that several attempts to revise corporate strategies have failed to correct 
E. that several attempts at revising corporate strategies have failed to correct them

this one is also a past JJ, anyone know the answer to this?

thanks very much.,

选D

我也明天考，是晚场的，祝成功啦。

我明天下午，祝大家好运。

现在就开始紧张了。