41. Doug and Billy have known each other ______ junior high school.(A) since(B) in(C) when(D) for

問題詳情

41. Doug and Billy have known each other ______ junior high school.
(A) since
(B) in
(C) when
(D) for

參考答案

答案：A
難度：簡單0.852549
統計：A(1087),B(118),C(41),D(29),E(0)

用户評論

【詹姆士】評論

在現在完成式使用「FOR」和「SINCE」