Question

【题目】He did the work all by herself, ______ surprised all of us.

A. it B. which

C. that D. by which

Answer 1

【答案】B

【解析】

考查关系词。句意:他一个人完成了这项工作，这使我们大家都感到吃惊。分析句子可知，本句为非限制性定语从句，which为先行词，指代前面的整个句子，在定语从句中作主语。故B选项正确。