試題詳解

48. According to the passage, why did the police in the U.K. have to work with store staff on Black Friday?
(A)To make sure that those stores did offer discounts to the shoppers.
(B)To ensure that sale-goers were able to enter and exit the stores safely.
(C)To make sure that every shopper waited in line before midnight on Black Friday.
(D)To ensure the safety of the items which were put up for sale.