阿摩線上測驗
31. It is high time that we ____ for the coming typhoon.
(A) have prepared
(B) prepared
(C) will preparing
(D) preparing
答案：登入後查看
統計： A(22), B(18), C(10), D(11), E(0) #3492314
統計： A(22), B(18), C(10), D(11), E(0) #3492314
