問題詳情

63 In the UK, it is _____ to leave a tip of around 10-15% of the bill, for good service and food.
(A) accidental
(B) periodic
(C) customary
(D) obligatory

參考答案

答案：C
難度：適中0.5
統計：A(4),B(1),C(9),D(4),E(0)