Ifailedinthespokenexaminationlasttermandonlythen

問題詳情：

 I failed in the spoken examination last term and only then _______ the importance of practising speaking English.

A. I had realized         B. had I realized          C. I did realize     D. did I realize

【回答】

D

知識點：倒裝與省略

題型：選擇題