Question

________, 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

Answer 1

B

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。