問題詳情

25.Only when the Lehman Brothers went bankrupt ___ the impact of global economic recession.
(A) did I realize
(B) I realize
(C) am I realizing
(D) I have realized

參考答案

答案：A
難度：困難0.255319
統計：A(12),B(12),C(3),D(14),E(0)