国家开放大学 / 商务英语2
—Is there any time requirement for registration?
— within 30 days after we receive our business license.
A. Sure. We will register within
B. Of course. We might register
C. Certainly.We should register
— within 30 days after we receive our business license.
A. Sure. We will register within
B. Of course. We might register
C. Certainly.We should register
参考答案：