阿摩線上測驗
42. The escalator is not ______ properly, so you had better take the stairs.
(A)uplifting
(B)progressing
(C)cooperating
(D)functioning
答案：登入後查看
統計： A(37), B(29), C(13), D(130), E(0) #2928745
統計： A(37), B(29), C(13), D(130), E(0) #2928745
