Mary passed the driving test, surprised everyone in the office A. which B. what

 Mary passed the driving test, ________surprised everyone in the office

A. which         B. what               C. this                 D. it

试题答案

A 考查非限制性定语从句中关系代词的辨析。which 指代前面的整个句子what 不用于定语从句；如果用C,D时前面必须用连词，否则就是定语从句。