问题补充:
8.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:
A. will give
B. have been given
C. have given
(答案→)D. will be given
解析:该空表示“将要被给”,应用一般将来时被动语态。