I am not sure exactly how much money you will receive but it willcover your major expense

问题补充：

I am not sure exactly how much money you will receive, but it willcover your major expense.

A. firmly

B. roughly

C. constantly

D. frequently

答案：

A. firmly

(答案→)B. roughly

C. constantly

D. frequently

解析：考查副词辨析A坚固地B粗略地C持续不断地 D 频繁地，题意为 我不能确定你确切地能得到多少钱，但粗略地你会包括你的主要花费。根据题意选B 项。

考点副词辨析。