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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

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

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

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

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