16. By the time the firemen arrived at the scene, the fire ______________

問題詳情

16. By the time the firemen arrived at the scene, the fire _______________.
(A) put out
(B) had put out
(C) was put out
(D) had been put out

答案：D
難度：適中0.694656
統計：A(12),B(11),C(17),D(91),E(0)