--- How I regret making the stupid mistake!

--- Yes. I       your doing it another way at that time, but in vain.

A．have suggested

B．suggested

C．would suggest

D．had suggested

资源储量依据经济意义分类（）。

A.经济的

B.边际经济的

C.次边际经济的

D.内蕴经济的

E.一般经济的