問題詳情

21.（ ）Alex: Either Tiffany or Susan ____Jeff’s sister.Jane: Are you sure? I remember Jeff said he was the only child in his family.
(A) be
(B) am
(C) is
(D) are

參考答案

答案：C
難度：非常簡單1
統計：A(0),B(0),C(4),D(0),E(0)