阿摩線上測驗
20. My application was holding ____ by the postal strike.
(A) on
(B) up
(C) off
(D) in
答案：登入後查看
統計： A(24), B(22), C(6), D(2), E(0) #3237239
統計： A(24), B(22), C(6), D(2), E(0) #3237239
