They wanted to charge $5 000 for the car we managed to bring the price down.A. butB. soC.

问题补充：

They wanted to charge $5,000 for the car, we managed to bring the price down.

A. but

B. so

C. when

D. since

答案：

(答案→)A. but

B. so

C. when

D. since

解析：两个分句之间是转折关系，故用并列连词but。