阿摩線上測驗
6. If any large items were to fall off the track area, please contact our station staff for assistance to ________ the
item. Please do not enter the track area without permission.
(A) retrospect
(B) refrain
(C) restrain
(D) retrieve
答案：登入後查看
統計： A(1), B(2), C(6), D(27), E(0) #1802804
統計： A(1), B(2), C(6), D(27), E(0) #1802804
