問題詳情

9. Since the road is wet this morning, _________ last night.
(A) it must rain
(B) it must be raining
(C)it must have rained
(D) it must have been rain

參考答案

答案:C
難度:簡單0.807947
統計:A(26),B(11),C(244),D(7),E(0)