問題詳情
21. ____________ for her loyal dog that barked so loudly to wake the neighbors, the old lady would not havebeen found passed out on the floor in her home.
(A) If it is not
(B) If it was not
(C) If it wouldn’t be
(D) If it had not been
參考答案
答案：D
難度：適中0.615385
統計：A(0),B(2),C(0),D(8),E(0)