He had no sooner finished his speech the students started cheering.A. sinceB. asC. whenD.

问题补充：

He had no sooner finished his speech the students started cheering.

A. since

B. as

C. when

D. than

答案：

A. since

B. as

C. when

(答案→)D. than

解析：考查no sooner…than.表示一……就; 根据句子意思“他一完成讲话学生就开始欢呼。”since既然；as作为； when 当什么时候；