问题补充：
You don know .
A. how much cost this car
B. how much is this car cost
C. how much this car is worth
D. how much is this car worth
答案：
A. how much cost this car
B. how much is this car cost
(答案→)C. how much this car is worth
D. how much is this car worth
解析：句意：你不知道这辆车值多少钱。宾语从句要用陈述语序。故排除ABD；这三个选项how much不是陈述语序。故选C。
