国家开放大学 / 商务英语2
— Generally speaking, value added tax is mainly charged on the taxable services.
— Well,
A. how do you know it？
B. why do you say so?
C. what do you mean by that?
— Well,
A. how do you know it？
B. why do you say so?
C. what do you mean by that?
参考答案：
佳题速递：