问题补充：
This is a very lovely doll. I’ll buy it .
A. how much may it cost
B. no matter how it may cost
C. however much it may cost
D. how may it cost
答案：
A. how much may it cost
B. no matter how it may cost
(答案→)C. however much it may cost
D. how may it cost
解析：考查让步状语从句。句意：这是一个非常可爱的洋娃娃，无论花多少钱我都会把它买下。首先从句应该用陈述语序，排除AD，无论多少钱应为no matter how much或however much.所以C正确
