题目内容
______ for something, a receipt is given to you.
| A.Paying | B.Having paid |
| C.When you have paid | D.To be paying |
C
解析
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题目内容
______ for something, a receipt is given to you.
| A.Paying | B.Having paid |
| C.When you have paid | D.To be paying |
C
解析