It surprised us all Kate made such big progress in this final exam.A. when B. thatC. howD

问题补充：

It surprised us all Kate made such big progress in this final exam.

A. when

B. that

C. how

D. whether

答案：

A. when

(答案→)B. that

C. how

D. whether

解析：B 考察主语从句。分析句子结构。句首的it形式主语。真正的主语是that引导的主语从句，that没有意义，在从句中不做成分。