问题
选择题
Only when _________________________.
A．did he arrive the meeting began
B．he arrived the meeting began.
C．did he arrive did the meeting begin.
D．he arrived did the meeting begin.
答案
答案：D
考查倒装句，only+时间状语从句，位于句首时，主句倒装，选C，句意是：只有当他到的时候会议才开始。选D。