问题补充：
The new-designed car is on show now. I wonder .
A. how much it cost
B. how much it costs
C. how much did it cost
D. how much does it cost
答案：
A. how much it cost
(答案→)B. how much it costs
C. how much did it cost
D. how much does it cost
解析：英语宾语从句中一般为陈述语序。句意：这种新设计的汽车正在展出。我想知道它需要花多少钱。结合语境可知从句中描述的是客观性动作，故用一般现在时态。主语it是单数第三人称，故谓语动词用单数。选项D为倒装结构，故选B。
