问题

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

正确答案是：

同类题型

If you are in any doubt as to _____ you should be doing these exercises, consult your doctor.

I’m thirsty（口渴的）.—-Could you give me _______

5 From this story, you can have some idea ______ can be used in reality

c. of; about D. on;at

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