---Did you catch what the teacher said?---No. She spoke so fast I couldn’t hear her very

问题补充：

---Did you catch what the teacher said?

---No. She spoke so fast I couldn’t hear her very clearly.

A. which

B. that

C. when

D. since

答案：

A. which

(答案→)B. that

C. when

D. since

解析：考查从句的连接词。“你听懂老师讲的了吗？”“不。她说的那么快以至于我听得不是太清楚。”so...that...“如此......以至于......”，表示结果。故选B。