在经济业务发生时，由业务经办人员直接取得或填制，用以表明某项经济业务已经发生或完成情况并明确有关经济责任的凭证是（）。

A.原始凭证

B.记账凭证

C.销货凭证

D.购货凭证

I bought this car _______ because it was beautiful in shape and color. But now it is out of shape

and doesn't work well and I regret having bought it!   [ ]

A. absolutely      

B. definitely        

C. merely          

D. really