Only when I saw Night Banquet a second time to appreciate its subject and music beauty.
A. did I begin
B. that I began
C. I began
D. had I began
网友回答
(答案→)A. did I begin
B. that I began
C. I began
D. had I began
解析：A only修饰状语置于句首时, 句子常用部分倒装形式, 本题中only 修饰when引导的状语从句, 故答案为A。