问题补充：
I have no idea .
A. what does this word mean
B. what this word mean
C. what is the meaning of this word
D. what the meaning of this word is
答案：
A. what does this word mean
B. what this word mean
C. what is the meaning of this word
(答案→)D. what the meaning of this word is
解析：可联系答.案.网客服索取。
