There was such a long queue for coffee at the interval that we _______ gave up.

A．eventually

B．unfortunately

C．generously

D．purposefully

党政机关应当从严审核报销公务接待费支出，报销凭证应当包括（）等。

A、派出单位公函

B、公务接待审批单

C、财务票据

D、接待清单