阿摩線上測驗
21. During the journey, the driver and other passengers are not permitted to access the car-deck and
enter the vehicle except __________ the special permission of the crew.
(A)on
(B)unless
(C)with
(D)without
答案：登入後查看
統計： A(177), B(96), C(640), D(178), E(0) #2080149
統計： A(177), B(96), C(640), D(178), E(0) #2080149
