单选题
Not a sound ______ while the professor was giving a speech.
A、
the students utter
B、
the students uttered
C、
did the students uttered
D、
did the students utter
【正确答案】
D
【答案解析】
倒装结构。当否定词not位于句首时，句子采用倒装结构，谓语动词的助动词提前。
提交答案
关闭