问题
选择题
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
答案
答案：D
搜题请搜索小程序“爱下问搜题”
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
答案：D