问题
选择题
Customers are asked to make sure that they______ the right change (零钱) before leaving the shop.
A．will give
B．will be given
C．have given
D．have been given
答案
答案：D
考查时态。句意：在离开商店之前，要求顾客确信他们给找给了正确的零钱。结合语境可知下文描述的是某时前完成的动作，故用完成时态。They是动作对象，故用被动语态。选D。