【已刪除】39 For safety’s sake, you should check on your car _______ you go for a long-distance drive.
(A) since
(B) while
(C) after
(D) before
答案:登入後查看
統計: A(3), B(2), C(4), D(21), E(0) #1219054
統計: A(3), B(2), C(4), D(21), E(0) #1219054