◎ 题干
Customers are asked to make sure that they ____ the right change before leaving the shop.

A. will give
B. have been given
C. have given
D. will be given
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Customers are asked to make sure that they ____the right change before leaving the shop. [ ]A. will give B. have been given C. have given D. will be given …”主要考查了你对  【现在完成时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。