How many times have you found yourself arriving at school to start your day, only ________ that you left your homework at home?

A．having discovered

B．discovering

C．to discover

D．Discover

我国的复式预算包括经常性预算和建设性预算两部分，下列选项中，（）属于经常性预算。

A.所得税

B.耕地占用税

C.国有资产收益

D.文教事业费

E.行政管理费