家用灶由（）等部分组成。

A、燃烧系统

B、供气系统

C、辅助系统

D、点火系统

(2013·西城一模)My friend's birthday is coming soon.I would like to go to ________ store，or some places close by to buy him ________ present.

A．the；the

B．a；the

C．/；a

D．the；a