27. This job must be completed by June 15th. I hope you can finish it
_____ time.
(A) at
(B) in
(C) by
(D) before
答案:登入後查看
統計: A(48), B(221), C(11), D(12), E(0) #1784554
統計: A(48), B(221), C(11), D(12), E(0) #1784554