记账凭证按其用途分类，可以分为( )。

A．一次性记账凭证和累计记账凭证

B．专用记账凭证和通用记账凭证

C．单式记账凭证和复式记账凭证

D．单一记账凭证和汇总记账凭证

It was in this new hall _________ was just set up last month ________ we held an important meeting yesterday.

A．which/ that

B．which/ what

C．that/ which

D．where/ that