Everything comes with price; there is no such thing as a free lunch in the world.A. a;

问题补充：

Everything comes with price; there is no such thing as a free lunch in the world.

A. a; a

B. the ; /

C. the ; a

D. a ; /

答案：

A. a; a

B. the ; /

C. the ; a

(答案→)D. a ; /

解析：考查冠词。第一空用a price泛指价格；第二空的no such thing指没有这样的事物，有了no说明后面不需要使用a。句意：每一个事物都有价格，在世界上没有免费的午餐。故D正确。