阿摩線上測驗
120. Requests for vacation time must be submitted to the supervisor at least two weeks_______advance.
(A) at
(B) on
(C) for
(D) in
答案：登入後查看
統計： A(18), B(43), C(92), D(453), E(0) #3823420
統計： A(18), B(43), C(92), D(453), E(0) #3823420
