问题
选择题
All teachers received warmest congratulations on Teachers’ Day. They felt ________.
A．an honour that they were teachers
B．that they were teachers an honour
C．it an honour when they were teachers
D．it an honour that they were teachers
答案
答案：D
题目分析：考查it做形式宾语：feel it+adj/n.+ that从句，it是形式宾语，that引导的是真正的宾语从句：句意：所有的老师在教师节都收到最热烈的祝贺，他们感到做老师是一件荣幸的事情。选D。
点评：在英语中it可以指时间，地点，度量衡等，也可以做形式主语，形式宾语，或者引导强调句型。也可以指代前面提及的同一个人或者事情。要特别模糊it的用法。