问题
选择题
I can't understand _______ Apple's iPad 2. [ ]
A. why are they so mad about
B. why they are so mad about
C. how are they so mad about
D. how they are so mad about
答案
答案：B
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I can't understand _______ Apple's iPad 2. [ ]
A. why are they so mad about
B. why they are so mad about
C. how are they so mad about
D. how they are so mad about
答案：B