问题补充:
The examination results in the speech of our headmaster delighted all of us.
A. refer to
B. referring to
C. was referred to
D. referred to
答案:
A. refer to
B. referring to
C. was referred to
(答案→)D. referred to
解析:考察过去分词作定语。The examination results与refer to构成被动关系。所有使用过去分词短语Referred to in the speech of our headmaster修饰名词短语the examination results.