surprised me most was such a little girl of seven could play the violin so well.A. That；w

问题补充：

surprised me most was such a little girl of seven could play the violin so well.

A. That；what

B. What；that

C. That；that

D. What；what

答案：

A. That；what

(答案→)B. What；that

C. That；that

D. What；what

解析：what引导名词性从句在句中作主语，that引导表语从句，that只是引导词，不作句子成分。