A-A+
I failed in the final examination last term an
问题详情
I failed in the final examination last term and only then ______ the importance of studies.
A.I realized
B.I had realized
C.had I realized
D.did I realize请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:D
解析:only位于句首时,谓语动词部分倒置。