问题
选择题
_______ surprised me most was that she had become a famous singer.
A．That
B．It
C．What
D．This
答案
答案：C
what surprised me most 在本题中是主语从句。如果选B, 则应把原题中的was去掉，变为：It surprised me most that she had become a famous singer. (it做形式主语)