問題詳情

II. Multiple Choice（10%）
【題組】16. Before Sue ____, I ____ been waiting for three hours.
(A)arrived/have
(B)has arrived/has
(C)arrived/had
(D)arrives/had

參考答案

答案：C
難度：適中0.428571
統計：A(1),B(2),C(3),D(0),E(0)