题干
It wasn’t until the 2010 CCTV Spring Festival Gala(央视春晚)________．
A：did the former pop band Little Tiger reunite
B：that the former pop band Little Tiger reunited
C：then did the former pop band Little Tiger reunite
D：when the former pop band Little Tiger reunited
答案(点此获取答案解析）
B
B. 
C. 
D. 
E. 
”,应假设为（ ）.
