阿摩線上測驗
33. Sorry I’m late. How long ___________?
(A) are you waiting
(B) will you be waiting
(C) have you been waiting
(D) did you wait for
答案：登入後查看
統計： A(157), B(29), C(1531), D(267), E(0) #810016
統計： A(157), B(29), C(1531), D(267), E(0) #810016
