单选题 ______ when Shanghai was the paradise for imperialist adventurers.
A. Gone are the days B. Are the days gone
C. Gone the days are D. Are gone the days

【正确答案】 A

【答案解析】[解析] 此种倒装句属于书面语体，口语中可以说：The days are gone when…。when引导的是the days的定语从句。