– When are you leaving for the concert?                                       

--I’m not sure. I haven’t finished ____ the dishes.                                            

A．do

B．to do

C．doing

D．done

查看报表输出效果可以使用（　　）命令。

A．“打印”

B．“打印预览”

C．“页面设置”

D．“数据库属性”