, the gathering crowd burst into applause.
A. On entering the hall
B. When he took the floor
C. The speaker took his place
D. No sooner had the speaker entered
网友回答
A. On entering the hall
(答案→)B. When he took the floor
C. The speaker took his place
D. No sooner had the speaker entered
解析：本题考查非谓语动词作状语的情况。非谓语动词作状语时其逻辑主语必须与句子主语保持一致，否则要用完整的状语从句或用独立主格结构。