阿摩線上測驗
50 On______ airlines we pay less for our tickets, but have to pay for food, headsets, or drinks.
(A) budget
(B) margin
(C) cabbage
(D) disclosed
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統計： A(155), B(17), C(8), D(9), E(0) #2294698
統計： A(155), B(17), C(8), D(9), E(0) #2294698
