下列各组物质的溶液混合后（各组中最后一种物质的溶液过量），最终有沉淀生成的是（　　）

A．ZnSO₄、NaOH、H₂SO₄

B．Na₂CO₃、NaCl、HCl

C．CaCl₂、Na₂CO₃、HCl

D．ZnSO₄、Ba（OH）₂、HNO₃

Tom wants to know if we can ____ John for the night, since he has lost all his money and can go nowhere.

A．put off

B．put on

C．put up

D．put down