选择与画线部分意思相同或相近的选项。

I go shopping with my mother on weekends. [ ]

A. from Monday to Friday

B. during the whole week

C. on Saturdays and Sundays

D. on Saturdays or Sundays

合同担保方式中，既可以用当事人自己的财产又可以用第三人的财产作担保的方式是( )。

A．保证

B．定金

C．留置

D．质押