for something, a receipt is given to you.A. Paying B. Having paidC. When you have paidD.

发布时间：2020-08-16 12:02:20


     for something, a receipt is given to you.
A. Paying
B. Having paid
C. When you have paid
D. To be paying

网友回答

A. Paying
B. Having paid
(答案→)C. When you have paid
D. To be paying
解析：考查非谓语动词。pay和give有先后关系，应该用完成时；排除A、D；B项缺少逻辑主语，故排除；C项符合题意。故选C。
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