試題詳解

34.Worker: Excuse me, sir. One of your bags is overweight. I’m going to have to charge you for the excess weight. Tourist: I see. How much ________ do I have to pay? And can I pay by credit card? Worker: 30 dollars, sir, and yes, we do accept credit cards.
(A) cash
(B) over
(C) extra
(D) additional